MDL-87426 core: Remove the deprecated output_select_html()

.upgradenotes/MDL-87426-2026012001213146.yml

@@ -0,0 +1,5 @@
+issueNumber: MDL-87426
+notes:
+  core:
+    - message: The `\admin_setting_configselect::output_select_html()` has been removed from `public/lib/adminlib.php`.
+      type: removed

public/lib/adminlib.php

@@ -3582,28 +3582,9 @@ class admin_setting_configselect extends admin_setting {
         }
     }
 
-    /**
-     * Returns XHTML select field
-     *
-     * Ensure the options are loaded, and generate the XHTML for the select
-     * element and any warning message. Separating this out from output_html
-     * makes it easier to subclass this class.
-     *
-     * @param string $data the option to show as selected.
-     * @param string $current the currently selected option in the database, null if none.
-     * @param string $default the default selected option.
-     * @return array the HTML for the select element, and a warning message.
-     * @deprecated since Moodle 3.2
-     */
-    public function output_select_html($data, $current, $default, $extraname = '') {
-        debugging('The method admin_setting_configselect::output_select_html is depreacted, do not use any more.', DEBUG_DEVELOPER);
-    }
-
     /**
      * Returns XHTML select field and wrapping div(s)
      *
-     * @see output_select_html()
-     *
      * @param string $data the option to show as selected
      * @param string $query
      * @return string XHTML field and wrapping div
@@ -5952,8 +5933,6 @@ class admin_setting_configselect_autocomplete extends admin_setting_configselect
     /**
      * Returns XHTML select field and wrapping div(s)
      *
-     * @see output_select_html()
-     *
      * @param string $data the option to show as selected
      * @param string $query
      * @return string XHTML field and wrapping div