[gnome-runtime-images/alatiera/drop-flatmngr] Stop building a custom flat-manager image

[Jordan Petridis <jpetridis src gnome org>]

commit 0598690dae28111139492b8df9ee053ac8cebc8c
Author: Jordan Petridis <jordan centricular com>
Date:   Mon Aug 1 16:52:15 2022 +0300

    Stop building a custom flat-manager image

 .gitlab-ci.yml                 | 22 ----------------------
 flat-manager-client/Dockerfile | 12 ------------
 2 files changed, 34 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e4a3350..bfa3087 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -86,28 +86,6 @@ base-manifest:
     - base
     - base:aarch64
 
-flat-manager-client:
-    stage: base
-    extends: ['.dockerfile_template', '.vars_x86_64']
-    variables:
-        DOCKERIMAGE: ${CI_REGISTRY_IMAGE}:${ARCH}-flat-manager-client
-        DOCKERFILE: flat-manager-client/Dockerfile
-
-flat-manager-client:aarch64:
-    stage: base
-    extends: ['.dockerfile_template', '.vars_aarch64']
-    variables:
-        DOCKERIMAGE: ${CI_REGISTRY_IMAGE}:${ARCH}-flat-manager-client
-        DOCKERFILE: flat-manager-client/Dockerfile
-
-flat-manager-client-manifest:
-  extends: ['.manifest']
-  variables:
-    REGISTRY_TAG: 'flat-manager-client'
-  needs:
-    - flat-manager-client
-    - flat-manager-client:aarch64
-
 # Expects ${BRANCH} and ${FD_BRANCH} variables which are the gnome branch and the freedesktop-sdk
 # branch it is based on
 .sdk_template: