Optimize further by letting isinstance do the heavy lifting in C.

Also makes the intent clearer.

src/OFS/subscribers.py

@@ -59,12 +59,7 @@ def maybeWarnDeprecated(ob, method_name):
     if getattr(getattr(ob, method_name), '__five_method__', False):
         # Method knows it's deprecated
         return
-    ob_type = type(ob)
-    # Quick check for directly deprecated classes
-    if ob_type in deprecatedManageAddDeleteClasses:
-        return
-    if any(issubclass(ob_type, cls)
-           for cls in deprecatedManageAddDeleteClasses):
+    if isinstance(ob, tuple(deprecatedManageAddDeleteClasses)):
         return
     class_ = ob.__class__
     LOG.debug(