Revert "CI: do not attempt to test GL-renderer"

This reverts commit 1eae54714f.

We install a fixed Mesa into the CI image, so these tests can pass now.

Fixes: https://gitlab.freedesktop.org/wayland/weston/issues/358

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>

.gitlab-ci.yml

@@ -69,7 +69,6 @@ build-native-meson-default-options:
     MESON_OPTIONS: >
       -Dwerror=true
       -Ddoc=true
-      -Dtest-gl-renderer=false
   extends: .build-native-meson
 
 build-native-meson-no-gl-renderer: