Revert "Add build failure notifications"

This reverts commit 52a3cd9520.

.drone.yml

@@ -21,21 +21,6 @@ steps:
         from_secret: drone_ssh_swarm-0_coopcloud_tech
     depends_on:
       - build static
-
-  - name: notify on failure
-    image: plugins/matrix
-    settings:
-      homeserver: https://matrix.autonomic.zone
-      roomid: "IFazIpLtxiScqbHqoa:autonomic.zone"
-      userid: "@autono-bot:autonomic.zone"
-      accesstoken:
-        from_secret: autono_bot_access_token
-    depends_on:
-      - build static
-      - deployment
-    when:
-      status:
-        - failure
 trigger:
   branch:
     - main