wp_removable_query_args()

function wp_removable_query_args() {
	$removable_query_args = array(
		'activate',
		'activated',
		'approved',
		'deactivate',
		'deleted',
		'disabled',
		'enabled',
		'error',
		'hotkeys_highlight_first',
		'hotkeys_highlight_last',
		'locked',
		'message',
		'same',
		'saved',
		'settings-updated',
		'skipped',
		'spammed',
		'trashed',
		'unspammed',
		'untrashed',
		'update',
		'updated',
		'wp-post-new-reload',
	);

	/**
	 * Filters the list of query variables to remove.
	 *
	 * @since WP-4.2.0
	 *
	 * @param array $removable_query_args An array of query variables to remove from a URL.
	 */
	return apply_filters( 'removable_query_args', $removable_query_args );
}