Fix the flaky test_qlinear test caused by hypothesis deadline (#26663)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26663
As Title says.
Example error:
https://circleci.com/gh/pytorch/pytorch/2894108?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link%2Fconsole
```
Sep 23 19:08:00 Unreliable test timings! On an initial run, this test took 453.13ms, which exceeded the deadline of 200.00ms, but on a subsequent run it took 23.01 ms, which did not. If you expect this sort of variability in your test timings, consider turning deadlines off for this test by setting deadline=None.
```
ghstack-source-id: 90613535
Test Plan: CI
Differential Revision: D17534476
fbshipit-source-id: d3ab91c8b290a0433eab4af3fc73ecbf728ec5bf
