Fixed callback proxy not being found on plugin reload

This happened due to the AutoUnload update a few days ago

Author: Ayuto

addons/source-python/packages/source-python/commands/command.py

@@ -22,24 +22,11 @@ def __init__(self, names, *args, **kwargs):
         self.args = args
         self.kwargs = kwargs
         self.callback = None
-        self._head_decorator = None
 
     def __call__(self, callback):
         """Register the commands to the given callback."""
-        # Is there another registered decorator for the callback?
-        if isinstance(callback, _BaseCommand):
-
-            # Store the callback
-            self.callback = callback.callback
-
-            # Store the previous decorator instance
-            self._head_decorator = callback
-
-        # Is this the first decorator registering the callback?
-        else:
-
-            # Store the callback
-            self.callback = callback
+        # Store the callback
+        self.callback = callback
 
         # Register the commands
         self._manager_class.register_commands(
@@ -52,9 +39,3 @@ def _unload_instance(self):
         """Unregister the commands."""
         # Unregister the commands
         self._manager_class.unregister_commands(self.names, self.callback)
-
-        # Was there another decorator for the callback?
-        if self._head_decorator is not None:
-
-            # Unregister the other decorator
-            self._head_decorator._unload_instance()