[gnome-maps/barthalion/gnome-runtime-images-quay] Update (or drop) the Docker image used by Flatpak job

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 50aa3a791b58d080d417d0bc77966d6b0f027ed0
Author: Bartłomiej Piotrowski <b bpiotrowski pl>
Date:   Wed Jul 27 12:45:09 2022 +0200

    Update (or drop) the Docker image used by Flatpak job
    
    The gnome-runtime-images have been recently migrated to Quay. This is already reflected in the template.
    
    Please note this MR has been created semi-automatically. If it doesn't make sense, feel free to close it.

 .gitlab-ci.yml | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 96a624a8..8a0a717a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,6 @@ include: 'https://gitlab.gnome.org/GNOME/citemplates/raw/master/flatpak/flatpak_
 
 flatpak:
     extends: .flatpak
-    image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master
     stage: test
     variables:
         # Replace with your manifest path