[gtk/macos-ci] No -Werror please

[Matthias Clasen <matthiasc src gnome org>]

commit 4dd95202714a34a27879d621bef4e791f3cc356f
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 3 12:28:57 2021 -0500

    No -Werror please
    
    Disabling -Werror one subproject at a time is too painful,
    just go without.

 .gitlab-ci.yml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d8598dab44..ed714f4668 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -155,8 +155,7 @@ macos:
     - pip3 install --user ninja
     - export PATH=/Users/gitlabrunner/Library/Python/3.7/bin:$PATH
   script:
-    - meson ${COMMON_MESON_FLAGS}
-            -Dx11-backend=false
+    - meson -Dx11-backend=false
             -Dintrospection=disabled
             _build
     - ninja -C _build