Automatic cleanup of permission subscriptions on PermissibleBase destructor calls

this has gotten too complex ...

src/command/ConsoleCommandSender.php

@@ -87,9 +87,4 @@ class ConsoleCommandSender implements CommandSender{
 		}
 		$this->lineHeight = $height;
 	}
-
-	public function __destruct(){
-		//permission subscriptions need to be cleaned up explicitly
-		$this->perm->destroyCycles();
-	}
 }