Unnecessary annotation

Author: carmocca

pytorch_lightning/plugins/training_type/ddp.py

@@ -106,7 +106,7 @@ def __init__(
         self._ddp_comm_wrapper = ddp_comm_wrapper
         self._pids: Optional[List[int]] = None
         self._sync_dir: Optional[str] = None
-        self._has_initialized_ddp: bool = False
+        self._has_initialized_ddp = False
         self.set_world_ranks()
 
     @property