feat: disable tracking service by default

templates/gitlab-ci-semrel.yml

@@ -112,9 +112,6 @@ workflow:
     - when: always
 
 variables:
-  # variabilized tracking image
-  TBC_TRACKING_IMAGE: registry.gitlab.com/to-be-continuous/tools/tracking:master
-
   # Default Docker image (use a public image - can be overridden)
   SEMREL_IMAGE: $[[ inputs.image ]]
   SEMREL_HOOKS_DIR: $[[ inputs.hooks-dir ]]