Remove use_c10_dispatcher: unboxed_only (#36838)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/36838
All ops now do unboxing after dispatch, i.e. c10 handles unboxing and c10 registers a wrapper for the op to JIT
The last op that manually registered its own wrapper to JIT in register_aten_ops.cpp was migrated.
Since there are no ops using use_c10_dispatcher: unboxed_only anymore, we can delete the feature.
Also:
- Rename some files to more accurately describe what they're doing now:
- OpsAlreadyMovedToC10.h/cpp -> ATenOpList.h/cpp
- register_aten_ops.cpp -> generated_unboxing_wrappers.cpp
- gen_jit_dispatch.py -> gen_unboxing_wrappers.cpp
ghstack-source-id: 102532915
Test Plan: waitforsandcastle
Differential Revision: D21100081
fbshipit-source-id: be824958eef33f6cd42a6a652175bd0b1df4ebf9
