Remove BUILD_NAMEDTENSOR from codegen and .cu files (#31047)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31047
Changelist:
- remove BUILD_NAMEDTENSOR from .cu files
- remove BUILD_NAMEDTENSOR special handling in function_wrapper.py
- remove BUILD_NAMEDTENSOR from cpp_extension.py. This code actually
did nothing because we always compile with BUILD_NAMEDTENSOR.
Test Plan: - run tests
Differential Revision: D18908442
Pulled By: zou3519
fbshipit-source-id: b239e24de58580adaf3cef573350773a38b1e4f0
