Revert "avm1: Don't warn in case a method doesn't exist"

This reverts commit 54d417c539,
because it no longer necessary as the warning was removed in the
previous commit.

core/src/avm1.rs

@@ -330,10 +330,8 @@ impl<'gc> Avm1<'gc> {
             active_clip,
         );
 
-        if obj.has_property(&mut activation, name) {
         let _ = obj.call_method(name, args, &mut activation);
     }
-    }
 
     pub fn notify_system_listeners(
         active_clip: DisplayObject<'gc>,