yocto-check-layer: expect success for test_patches_upstream_status

yocto-check-layer: expect success for test_patches_upstream_status

When the Upstream-Status tag for patches became mandatory,
the test verifying the presence of this tag was made to not
fail the layer compatibility tests, in order to allow time for
the maintainers to adapt to this change.

This was two years before this commit.

Since then the layer compatibility script shows a cryptic
"unexpected success" result for this test, which of course
becomes clear once one checks the code and commit history,
but it is a nuisance still, which shouldn't be needed to
understand the result.

This commit removes the the related annotation so the
compatibility check will pass or fail with a clear message - in
hope that 2 years was enough for active maintainers to
adjust their patches.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>