gitlab-ci: remove useless 'patch' package in the VK test image

It was copied from the GL test image but it's actually unused.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4179>
1 file changed