diff --git a/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion-debug.js b/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion-debug.js
deleted file mode 100644
index 681f963384a..00000000000
--- a/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion-debug.js
+++ /dev/null
@@ -1,85 +0,0 @@
-YUI.add('moodle-mod_quiz-randomquestion', function (Y, NAME) {
-
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-
-/**
- * Add a random question functionality for a popup in quiz editing page.
- *
- * @package   mod_quiz
- * @copyright 2014 The Open University
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-var CSS = {
-    RANDOMQUESTIONFORM: 'div.randomquestionformforpopup',
-    PAGEHIDDENINPUT: 'input#rform_qpage',
-    RANDOMQUESTIONLINKS: '.menu [data-action="addarandomquestion"]'
-};
-
-var PARAMS = {
-    PAGE: 'addonpage',
-    HEADER: 'header',
-    FORM: 'form'
-};
-
-var POPUP = function() {
-    POPUP.superclass.constructor.apply(this, arguments);
-};
-
-Y.extend(POPUP, Y.Base, {
-
-    dialogue: function(header) {
-        // Create a dialogue on the page and hide it.
-        var config = {
-            headerContent: header,
-            bodyContent: Y.one(CSS.RANDOMQUESTIONFORM),
-            draggable: true,
-            modal: true,
-            zIndex: 1000,
-            centered: false,
-            width: 'auto',
-            visible: false,
-            postmethod: 'form',
-            footerContent: null
-        };
-        var popup = {dialog: null};
-        popup.dialog = new M.core.dialogue(config);
-        popup.dialog.show();
-    },
-
-    initializer: function() {
-        Y.one('body').delegate('click', this.display_dialogue, CSS.RANDOMQUESTIONLINKS, this);
-    },
-
-    display_dialogue: function(e) {
-        e.preventDefault();
-
-        Y.one(CSS.RANDOMQUESTIONFORM + ' ' + CSS.PAGEHIDDENINPUT).set('value',
-                e.currentTarget.getData(PARAMS.PAGE));
-
-        this.dialogue(e.currentTarget.getData(PARAMS.HEADER));
-    }
-});
-
-M.mod_quiz = M.mod_quiz || {};
-M.mod_quiz.randomquestion = M.mod_quiz.randomquestion || {};
-M.mod_quiz.randomquestion.init = function() {
-    return new POPUP();
-};
-
-
-}, '@VERSION@', {"requires": ["base", "event", "node", "io", "moodle-core-notification-dialogue"]});
diff --git a/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion-min.js b/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion-min.js
deleted file mode 100644
index 7b227886ea8..00000000000
--- a/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion-min.js
+++ /dev/null
@@ -1 +0,0 @@
-YUI.add("moodle-mod_quiz-randomquestion",function(e,t){var n={RANDOMQUESTIONFORM:"div.randomquestionformforpopup",PAGEHIDDENINPUT:"input#rform_qpage",RANDOMQUESTIONLINKS:'.menu [data-action="addarandomquestion"]'},r={PAGE:"addonpage",HEADER:"header",FORM:"form"},i=function(){i.superclass.constructor.apply(this,arguments)};e.extend(i,e.Base,{dialogue:function(t){var r={headerContent:t,bodyContent:e.one(n.RANDOMQUESTIONFORM),draggable:!0,modal:!0,zIndex:1e3,centered:!1,width:"auto",visible:!1,postmethod:"form",footerContent:null},i={dialog:null};i.dialog=new M.core.dialogue(r),i.dialog.show()},initializer:function(){e.one("body").delegate("click",this.display_dialogue,n.RANDOMQUESTIONLINKS,this)},display_dialogue:function(t){t.preventDefault(),e.one(n.RANDOMQUESTIONFORM+" "+n.PAGEHIDDENINPUT).set("value",t.currentTarget.getData(r.PAGE)),this.dialogue(t.currentTarget.getData(r.HEADER))}}),M.mod_quiz=M.mod_quiz||{},M.mod_quiz.randomquestion=M.mod_quiz.randomquestion||{},M.mod_quiz.randomquestion.init=function(){return new i}},"@VERSION@",{requires:["base","event","node","io","moodle-core-notification-dialogue"]});
diff --git a/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion.js b/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion.js
deleted file mode 100644
index 681f963384a..00000000000
--- a/mod/quiz/yui/build/moodle-mod_quiz-randomquestion/moodle-mod_quiz-randomquestion.js
+++ /dev/null
@@ -1,85 +0,0 @@
-YUI.add('moodle-mod_quiz-randomquestion', function (Y, NAME) {
-
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-
-/**
- * Add a random question functionality for a popup in quiz editing page.
- *
- * @package   mod_quiz
- * @copyright 2014 The Open University
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-var CSS = {
-    RANDOMQUESTIONFORM: 'div.randomquestionformforpopup',
-    PAGEHIDDENINPUT: 'input#rform_qpage',
-    RANDOMQUESTIONLINKS: '.menu [data-action="addarandomquestion"]'
-};
-
-var PARAMS = {
-    PAGE: 'addonpage',
-    HEADER: 'header',
-    FORM: 'form'
-};
-
-var POPUP = function() {
-    POPUP.superclass.constructor.apply(this, arguments);
-};
-
-Y.extend(POPUP, Y.Base, {
-
-    dialogue: function(header) {
-        // Create a dialogue on the page and hide it.
-        var config = {
-            headerContent: header,
-            bodyContent: Y.one(CSS.RANDOMQUESTIONFORM),
-            draggable: true,
-            modal: true,
-            zIndex: 1000,
-            centered: false,
-            width: 'auto',
-            visible: false,
-            postmethod: 'form',
-            footerContent: null
-        };
-        var popup = {dialog: null};
-        popup.dialog = new M.core.dialogue(config);
-        popup.dialog.show();
-    },
-
-    initializer: function() {
-        Y.one('body').delegate('click', this.display_dialogue, CSS.RANDOMQUESTIONLINKS, this);
-    },
-
-    display_dialogue: function(e) {
-        e.preventDefault();
-
-        Y.one(CSS.RANDOMQUESTIONFORM + ' ' + CSS.PAGEHIDDENINPUT).set('value',
-                e.currentTarget.getData(PARAMS.PAGE));
-
-        this.dialogue(e.currentTarget.getData(PARAMS.HEADER));
-    }
-});
-
-M.mod_quiz = M.mod_quiz || {};
-M.mod_quiz.randomquestion = M.mod_quiz.randomquestion || {};
-M.mod_quiz.randomquestion.init = function() {
-    return new POPUP();
-};
-
-
-}, '@VERSION@', {"requires": ["base", "event", "node", "io", "moodle-core-notification-dialogue"]});
diff --git a/mod/quiz/yui/src/randomquestion/build.json b/mod/quiz/yui/src/randomquestion/build.json
deleted file mode 100644
index 279667b23ec..00000000000
--- a/mod/quiz/yui/src/randomquestion/build.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-    "name": "moodle-mod_quiz-randomquestion",
-    "builds": {
-        "moodle-mod_quiz-randomquestion": {
-            "jsfiles": [
-                "randomquestion.js"
-            ]
-        }
-    }
-}
diff --git a/mod/quiz/yui/src/randomquestion/js/randomquestion.js b/mod/quiz/yui/src/randomquestion/js/randomquestion.js
deleted file mode 100644
index 2ba78c1ed33..00000000000
--- a/mod/quiz/yui/src/randomquestion/js/randomquestion.js
+++ /dev/null
@@ -1,80 +0,0 @@
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-
-/**
- * Add a random question functionality for a popup in quiz editing page.
- *
- * @package   mod_quiz
- * @copyright 2014 The Open University
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-var CSS = {
-    RANDOMQUESTIONFORM: 'div.randomquestionformforpopup',
-    PAGEHIDDENINPUT: 'input#rform_qpage',
-    RANDOMQUESTIONLINKS: '.menu [data-action="addarandomquestion"]'
-};
-
-var PARAMS = {
-    PAGE: 'addonpage',
-    HEADER: 'header',
-    FORM: 'form'
-};
-
-var POPUP = function() {
-    POPUP.superclass.constructor.apply(this, arguments);
-};
-
-Y.extend(POPUP, Y.Base, {
-
-    dialogue: function(header) {
-        // Create a dialogue on the page and hide it.
-        var config = {
-            headerContent: header,
-            bodyContent: Y.one(CSS.RANDOMQUESTIONFORM),
-            draggable: true,
-            modal: true,
-            zIndex: 1000,
-            centered: false,
-            width: 'auto',
-            visible: false,
-            postmethod: 'form',
-            footerContent: null
-        };
-        var popup = {dialog: null};
-        popup.dialog = new M.core.dialogue(config);
-        popup.dialog.show();
-    },
-
-    initializer: function() {
-        Y.one('body').delegate('click', this.display_dialogue, CSS.RANDOMQUESTIONLINKS, this);
-    },
-
-    display_dialogue: function(e) {
-        e.preventDefault();
-
-        Y.one(CSS.RANDOMQUESTIONFORM + ' ' + CSS.PAGEHIDDENINPUT).set('value',
-                e.currentTarget.getData(PARAMS.PAGE));
-
-        this.dialogue(e.currentTarget.getData(PARAMS.HEADER));
-    }
-});
-
-M.mod_quiz = M.mod_quiz || {};
-M.mod_quiz.randomquestion = M.mod_quiz.randomquestion || {};
-M.mod_quiz.randomquestion.init = function() {
-    return new POPUP();
-};
diff --git a/mod/quiz/yui/src/randomquestion/meta/randomquestion.json b/mod/quiz/yui/src/randomquestion/meta/randomquestion.json
deleted file mode 100644
index a15a4393a84..00000000000
--- a/mod/quiz/yui/src/randomquestion/meta/randomquestion.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-    "moodle-mod_quiz-randomquestion": {
-        "requires": [
-            "base",
-            "event",
-            "node",
-            "io",
-            "moodle-core-notification-dialogue"
-        ]
-    }
-}