Remove unnecessary non_contiguous and gradient tests from test_linalg (#68188)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68188
As per title
cc mruberry jianyuh nikitaved pearu walterddr IvanYashchuk xwang233 Lezcano
Test Plan: Imported from OSS
Reviewed By: anjali411
Differential Revision: D33774419
Pulled By: mruberry
fbshipit-source-id: d63b599a25a6426463548d632d13a403cad1cc34
(cherry picked from commit eed47601fa11dfe7161c430955a5af6784bb3d42)
