Fix docstring (#4585)

Co-authored-by: Jeff Yang <[email protected]>
(cherry picked from commit 45a6959)

Author: 2 people

pytorch_lightning/core/lightning.py

@@ -1384,7 +1384,6 @@ def _verify_is_manual_optimization(self, fn_name):
 
     @classmethod
     def _auto_collect_arguments(cls, frame=None) -> Tuple[Dict, Dict]:
-        """"""
         """
         Collect all module arguments in the current constructor and all child constructors.
         The child constructors are all the ``__init__`` methods that reach the current class through