Remove hotpatches that circumvent MAGMA bug (#34357)
Summary:
Changelog:
- The magma implementation of small singular square batch matrices had a bug that resulted in nan values in the LU factorization result. This has been fixed in MAGMA 2.5.2. This PR removes the existing patch that was a temporary workaround for this bug.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34357
Test Plan: - Existing tests for det and lu should pass
Differential Revision: D20422879
Pulled By: seemethere
fbshipit-source-id: 8dd7a30b5c31fc5b844e0a11965efd46067e936a
