Undo newline

Author: mroeschke

pandas/core/internals/managers.py

@@ -598,7 +598,6 @@ def setitem(self, indexer, value) -> Self:
                     return self
             # No need to split if we either set all columns or on a single block
             # manager
-
             self = self.copy(deep=True)
 
         return self.apply("setitem", indexer=indexer, value=value)