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

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit b7ebe960aee79e0b271b0813dc694efafa45acb8
Author: Bartłomiej Piotrowski <b bpiotrowski pl>
Date:   Wed Jul 27 12:52:52 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 3fd10989..a642b5e6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -23,7 +23,6 @@ style-check:
       - "style-check-junit-report.xml"
 
 flatpak:
-  image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master
   variables:
     MANIFEST_PATH: 'build-aux/org.gnome.seahorse.ApplicationDevel.json'
     FLATPAK_MODULE: "seahorse"