[gnome-runtime-images] Remove 40 images

[Jordan Petridis <jpetridis src gnome org>]

commit 3a89244f1827f29a2749dfee7c6da76a0cf58e00
Author: Jordan Petridis <jordan centricular com>
Date:   Sun Apr 3 01:22:54 2022 +0300

    Remove 40 images
    
    Its EOL

 .gitlab-ci.yml | 15 ---------------
 1 file changed, 15 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cbc9317..998c612 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -115,17 +115,6 @@ flat-manager-client:
     - when: 'manual'
       allow_failure: true
 
-.vars_40:
-  variables:
-    BRANCH: "40"
-    FD_BRANCH: "20.08"
-    LLVM_VERSION: "12"
-  rules:
-    - if: '$REBUILD_STABLE'
-      when: 'always'
-    - when: 'manual'
-      allow_failure: true
-
 .vars_41:
   variables:
     BRANCH: "41"
@@ -152,10 +141,6 @@ gnome:nightly:
   stage: 'runtimes'
   extends: ['.sdk_template', '.vars_nightly']
 
-gnome:40:
-  stage: 'runtimes'
-  extends: ['.sdk_template', '.vars_40']
-
 gnome:41:
   stage: 'runtimes'
   extends: ['.sdk_template', '.vars_41']