clean up duplicated op names (#41092)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41092
added overload name for some full JIT operators and removed some duplicated op registrations
Test Plan:
apply D21032976, then buck run fbsource//xplat/caffe2/fb/pytorch_predictor:predictor
make sure there's no runtime error in operator registration
Reviewed By: iseeyuan
Differential Revision: D22419922
fbshipit-source-id: f651898e75b5bdb8dc03fc00b136689536c51707
