Code cleanup

- Remove extraneous use statements
- Format require_once

src/Model/GlobalContact.php

@@ -381,7 +381,7 @@ class GlobalContact
 		if (DBM::is_result($r)) {
 			return $r[0]['total'];
 		}
-		
+
 		return 0;
 	}
 

src/Protocol/PortableContact.php

@@ -9,9 +9,6 @@
 
 namespace Friendica\Protocol;
 
-use Friendica\App;
-use Friendica\Core\System;
-use Friendica\Core\Cache;
 use Friendica\Core\Config;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;

src/Worker/Expire.php

@@ -15,8 +15,8 @@ class Expire {
 	public static function execute($param = '', $hook_name = '') {
 		global $a;
 
-		require_once('include/datetime.php');
-		require_once('include/items.php');
+		require_once 'include/datetime.php';
+		require_once 'include/items.php';
 
 		load_hooks();
 

src/Worker/Notifier.php

@@ -4,7 +4,6 @@
  */
 namespace Friendica\Worker;
 
-use Friendica\App;
 use Friendica\Core\Config;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;