Let POST user leave be used from anywhere

src/main/java/net/frozenorb/apiv3/routes/users/POSTUserLeave.java

@@ -14,18 +14,12 @@ public class POSTUserLeave implements Route {
     @Override
     public Object handle(Request req, Response res) throws Exception {
         User user = User.byId(req.params("id"));
-        Actor actor = req.attribute("actor");
-
-        if (actor.getType() != ActorType.SERVER) {
-            return ErrorUtils.serverOnly();
-        }
 
         if (user == null) {
             return ErrorUtils.notFound("User", req.params("id"));
         }
 
         user.leftServer();
-
         APIv3.getDatastore().save(user);
         return user;
     }