Update octodns/provider/azuredns.py

Co-authored-by: Ross McFarland <ross@github.com>

octodns/provider/azuredns.py

@@ -498,7 +498,7 @@ class AzureProvider(BaseProvider):
         for change in changes:
             class_name = change.__class__.__name__
             if class_name == 'Delete':
-                getattr(self, '_apply_{}'.format(class_name))(change)
+                self._apply_Delete(change)
 
         for change in changes:
             class_name = change.__class__.__name__