Revert "add numpy typing plugin to mypy config (#92930)"
This reverts commit 5f1ac188f8dd01a81d0ddeebdbc4d22e25311b72.
Reverted https://github.com/pytorch/pytorch/pull/92930 on behalf of https://github.com/clee2000 due to causing test_doc_examples (main.TestTypeHints) to fail https://github.com/pytorch/pytorch/actions/runs/4049393005/jobs/6965869223 https://hud.pytorch.org/pytorch/pytorch/commit/5f1ac188f8dd01a81d0ddeebdbc4d22e25311b72, note for revert review: PR was forced merged after first failure, which was flaky
