[iagno] ci: Drop explicit image: key

[Jordan Petridis <jpetridis src gnome org>]

commit 7072080eac296fff79b3e61a195000ecf39cbe45
Author: Jordan Petridis <jpetridis gnome org>
Date:   Mon Sep 12 07:27:31 2022 +0000

    ci: Drop explicit image: key
    
    We have moved the registry to quay, and in general use the default image form the template.

 .gitlab-ci.yml | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f007f8d..a47a0b8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,6 @@ variables:
     BUNDLE: "iagno-dev.flatpak"
 
 flatpak:
-    image: 'registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master'
     variables:
         MANIFEST_PATH: "org.gnome.Reversi.json"
         FLATPAK_MODULE: "iagno"