Removes integer division call sites (#35862)
Summary:
Per title. Tests of integer division are unchanged.
The intent of this PR is to eliminate warning noise as users see our integer div deprecation warning and try to update their programs to be conformant. In particular, some CUDA indexing operations could perform a deprecated integer division, possibly confusing users.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35862
Differential Revision: D20817957
Pulled By: mruberry
fbshipit-source-id: b9fa15922c9bcea3cb08c0402ea2515feec137c9
