Remove global variable

includes/Admin/Admin_Page.php

@@ -151,14 +151,9 @@ private function get_available_plugins() {
 	 *
 	 * @since n.e.x.t
 	 *
-	 * @global array  $available_plugins        The list of available plugins.
-	 * @global string $selected_plugin_basename The selected plugin basename.
-	 * @global array  $categories               An array of categories.
-	 * @global mixed  $user_settings            The user interface setting value.
+	 * @SuppressWarnings(PHPMD.UnusedLocalVariable)
 	 */
 	public function render_page() {
-		global $available_plugins, $selected_plugin_basename, $categories, $user_settings;
-
 		$available_plugins = $this->get_available_plugins();
 
 		$selected_plugin_basename = filter_input( INPUT_GET, 'plugin', FILTER_SANITIZE_FULL_SPECIAL_CHARS );