drm/ci: do not automatically retry on error

drm/ci: do not automatically retry on error

Since the kernel doesn't use a bot like Mesa that requires tests to pass
in order to merge the patches, leave it to developers and/or maintainers
to manually retry.

Suggested-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Reviewed-by: David Heidelberg <david.heidelberg@collabora.com>
Link: https://lore.kernel.org/r/20231024004525.169002-10-helen.koike@collabora.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>