simplify method_def generation (#100059)
simplify method_def generation
Summary:
This removes some duplication. This was originally done to streamline
a subsequent change, but that change turned out to be
misguided. Nevertheless, this is a nice simplification.
Test Plan:
This should change the code gen by removing some redundant
parentheses. Rely on CI.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/100059
Approved by: https://github.com/ezyang
