lima/ci: There is no need to redefine HWCI_TEST_SCRIPT

.piglit-test defines it already.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Acked-by: Erico Nunes <nunes.erico@gmail.com>
Reviewed-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18276>

src/gallium/drivers/lima/ci/gitlab-ci.yml

@@ -22,7 +22,6 @@ lima-mali450-piglit-gpu:arm64:
     - .piglit-test
     - .lava-meson-gxl-s805x-libretech-ac
   variables:
-    HWCI_TEST_SCRIPT: "/install/piglit/piglit-runner.sh"
     PIGLIT_PLATFORM: gbm
     PIGLIT_PROFILES: gpu
   parallel: 2