undone unnecessary change

Author: debnathshoham

pandas/io/parsers/python_parser.py

@@ -432,6 +432,7 @@ def _infer_columns(self):
                                 and self.dtype.get(old_col) is not None
                                 and self.dtype.get(col) is None
                             ):
+                                
                                 self.dtype.update({col: self.dtype.get(old_col)})
                         this_columns[i] = col
                         counts[col] = cur_count + 1