[pytorch] Remove mobile nonvariadic run_method (#44235)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44235
Removes nonvariadic run_method() from mobile Module entirely (to be later replaced by a variadic version). All use cases should have been migrated to use get_method() and Method::operator() in D23436351
ghstack-source-id: 111848220
Test Plan: CI
Reviewed By: iseeyuan
Differential Revision: D23484577
fbshipit-source-id: 602fcde61e13047a34915b509da048b9550103b1
