diff --git a/administrator/components/com_tags/src/Controller/TagController.php b/administrator/components/com_tags/src/Controller/TagController.php
index 80a723fd79be0..741bc70a86b49 100644
--- a/administrator/components/com_tags/src/Controller/TagController.php
+++ b/administrator/components/com_tags/src/Controller/TagController.php
@@ -40,22 +40,6 @@ protected function allowAdd($data = [])
         return $this->app->getIdentity()->authorise('core.create', 'com_tags');
     }
 
-    /**
-     * Method to check if you can edit a record.
-     *
-     * @param   array   $data  An array of input data.
-     * @param   string  $key   The name of the key for the primary key.
-     *
-     * @return  boolean
-     *
-     * @since   3.1
-     */
-    protected function allowEdit($data = [], $key = 'id')
-    {
-        // Since there is no asset tracking and no categories, revert to the component permissions.
-        return parent::allowEdit($data, $key);
-    }
-
     /**
      * Method to run batch operations.
      *
diff --git a/libraries/src/Component/Exception/MissingComponentException.php b/libraries/src/Component/Exception/MissingComponentException.php
index d862b517f1b50..efdd106433163 100644
--- a/libraries/src/Component/Exception/MissingComponentException.php
+++ b/libraries/src/Component/Exception/MissingComponentException.php
@@ -22,17 +22,4 @@
  */
 class MissingComponentException extends RouteNotFoundException
 {
-    /**
-     * Constructor
-     *
-     * @param   string      $message   The Exception message to throw.
-     * @param   integer     $code      The Exception code.
-     * @param   \Exception  $previous  The previous exception used for the exception chaining.
-     *
-     * @since   3.7.0
-     */
-    public function __construct($message = '', $code = 404, \Exception $previous = null)
-    {
-        parent::__construct($message, $code, $previous);
-    }
 }
diff --git a/libraries/src/Toolbar/Button/DropdownButton.php b/libraries/src/Toolbar/Button/DropdownButton.php
index 97272da54c19e..915f45e7540f0 100644
--- a/libraries/src/Toolbar/Button/DropdownButton.php
+++ b/libraries/src/Toolbar/Button/DropdownButton.php
@@ -84,20 +84,6 @@ protected function prepareOptions(array &$options)
         }
     }
 
-    /**
-     * Render button HTML.
-     *
-     * @param   array  $options  The button options.
-     *
-     * @return  string  The button HTML.
-     *
-     * @since  4.0.0
-     */
-    protected function renderButton(array &$options): string
-    {
-        return parent::renderButton($options);
-    }
-
     /**
      * Get the button CSS Id.
      *