Remove codegen logic to support non-c10-full ops (#49164)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49164
This PR removes the logic paths in codegen that were responsible for handling non-c10-full ops.
This only goes through our basic codegen. It does not simplify C++ code yet and it does not remove the codegen for generated unboxing wrappers yet.
ghstack-source-id: 119450487
Test Plan: waitforsandcastle
Reviewed By: ezyang
Differential Revision: D25462977
fbshipit-source-id: 7e70d14bea96948f5056d98125f3e6ba6bd78285
