Clear scheduled preload queue during plugin uninstallation

Author: mustafauysal

uninstall.php

@@ -79,6 +79,7 @@ function powered_cache_uninstall_site() {
 	// remove cron tasks
 	wp_clear_scheduled_hook( \PoweredCache\Constants\PURGE_CACHE_CRON_NAME );
 	wp_clear_scheduled_hook( \PoweredCache\Constants\PURGE_FO_CRON_NAME );
+	wp_clear_scheduled_hook( \PoweredCache\Constants\DEFERRED_PRELOAD_QUEUE_CRON_NAME );
 
 	delete_site_transient( \PoweredCache\Constants\PURGE_CACHE_PLUGIN_NOTICE_TRANSIENT );
 	delete_transient( \PoweredCache\Constants\PURGE_CACHE_PLUGIN_NOTICE_TRANSIENT );