diff --git a/blocks/settings/block_settings.php b/blocks/settings/block_settings.php
index c338cfaf773..d5a7d4d72d4 100644
--- a/blocks/settings/block_settings.php
+++ b/blocks/settings/block_settings.php
@@ -139,12 +139,4 @@ class block_settings extends block_base {
         $this->contentgenerated = true;
         return true;
     }
-
-    function html_attributes() {
-        $attributes = parent::html_attributes();
-        if (!empty($this->config->enablehoverexpansion) && $this->config->enablehoverexpansion == 'yes') {
-            $attributes['class'] .= ' block_js_expansion';
-        }
-        return $attributes;
-    }
 }
diff --git a/blocks/settings/edit_form.php b/blocks/settings/edit_form.php
index efe5d0d56a2..e9af212285d 100644
--- a/blocks/settings/edit_form.php
+++ b/blocks/settings/edit_form.php
@@ -37,13 +37,6 @@ class block_settings_edit_form extends block_edit_form {
 
         $yesnooptions = array('yes'=>get_string('yes'), 'no'=>get_string('no'));
 
-        $mform->addElement('select', 'config_enablehoverexpansion', get_string('enablehoverexpansion', $this->block->blockname), $yesnooptions);
-        if (empty($this->block->config->enablehoverexpansion) || $this->block->config->enablehoverexpansion=='no') {
-            $mform->getElement('config_enablehoverexpansion')->setSelected('no');
-        } else {
-            $mform->getElement('config_enablehoverexpansion')->setSelected('yes');
-        }
-
         $mform->addElement('select', 'config_enabledock', get_string('enabledock', $this->block->blockname), $yesnooptions);
         if (empty($this->block->config->enabledock) || $this->block->config->enabledock=='yes') {
             $mform->getElement('config_enabledock')->setSelected('yes');
diff --git a/blocks/settings/lang/en/block_settings.php b/blocks/settings/lang/en/block_settings.php
index 12f532242d4..51a7d50e8aa 100644
--- a/blocks/settings/lang/en/block_settings.php
+++ b/blocks/settings/lang/en/block_settings.php
@@ -24,6 +24,5 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-$string['enablehoverexpansion'] = 'Enable mouseover expansion of this block';
 $string['enabledock'] = 'Allow the user to dock this block';
 $string['pluginname'] = 'Settings';