Remove unneeded registry

Author: jhongturney

.github/dependabot.template.yml

@@ -1,11 +1,5 @@
 ---
 version: 2
-registries:
-  ghcr:
-    type: docker-registry
-    url: ghcr.io
-    username: PAT
-    password: ${{ secrets.CONTAINER_BUILDER_TOKEN }}
 updates:
   - package-ecosystem: "bundler"
     directory: "/"
@@ -15,8 +9,6 @@ updates:
     vendor: true
   - package-ecosystem: "docker"
     directory: "/"
-    registries:
-      - ghcr
     schedule:
       interval: "daily"
     open-pull-requests-limit: 20