Update Addon functions and calls

Update function names and calls for Addon class.

mod/subthread.php

@@ -1,6 +1,7 @@
 <?php
 
 use Friendica\App;
+use Friendica\Core\Addon;
 use Friendica\Core\System;
 use Friendica\Database\DBM;
 
@@ -156,7 +157,7 @@ EOT;
 
 	$arr['id'] = $post_id;
 
-	call_hooks('post_local_end', $arr);
+	Addon::callHooks('post_local_end', $arr);
 
 	killme();