fix server config

See: https://wordpress.org/support/topic/jetpack-conflict-15/

Author: pfefferle

activitypub.php

@@ -3,7 +3,7 @@
  * Plugin Name: ActivityPub
  * Plugin URI: https://github.com/pfefferle/wordpress-activitypub/
  * Description: The ActivityPub protocol is a decentralized social networking protocol based upon the ActivityStreams 2.0 data format.
- * Version: 0.15.0
+ * Version: 0.16.0
  * Author: Matthias Pfefferle
  * Author URI: https://notiz.blog/
  * License: MIT
@@ -84,14 +84,6 @@ function init() {
 	require_once \dirname( __FILE__ ) . '/includes/class-health-check.php';
 	\Activitypub\Health_Check::init();
 
-	require_once \dirname( __FILE__ ) . '/includes/rest/class-server.php';
-	\add_filter(
-		'wp_rest_server_class',
-		function() {
-			return '\Activitypub\Rest\Server';
-		}
-	);
-
 	if ( \WP_DEBUG ) {
 		require_once \dirname( __FILE__ ) . '/includes/debug.php';
 	}