[babl] build: revert glibc workaround for arch CI

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 6f7df0c3792455f6871d215aec8580471858cbe7
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Feb 18 20:45:13 2021 +0100

    build: revert glibc workaround for arch CI

 .gitlab-ci.yml | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 288b0c150..f98bb7b71 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,7 +12,6 @@ cache:
     paths:
       - _build/meson-logs
   before_script:
-    - pacman -Syu --noconfirm https://archive.archlinux.org/packages/g/glibc/glibc-2.33-3-x86_64.pkg.tar.zst
     - pacman -Syu --noconfirm --needed --cachedir $PACMAN_CACHE
         base-devel
         git