Revert "Require bias to be contiguous for depthwise3x3_winograd backend (#85711)"
This reverts commit 9a126702ce5a73d3409be8bb7cd04a9fbd7d162a.
Reverted https://github.com/pytorch/pytorch/pull/85711 on behalf of https://github.com/huydhn due to This breaks functorch/test_vmap with some unexpected successes https://hud.pytorch.org/pytorch/pytorch/commit/9a126702ce5a73d3409be8bb7cd04a9fbd7d162a
