Remove unused cache setup in `fmt` job

Changelog: removed

templates/fmt.yml

@@ -87,11 +87,6 @@ spec:
       type: array
       description: 'Defines the `rules` of the job.'
 
-    cache_policy:
-      default: pull-push
-      type: string
-      description: 'Defines the cache policy of the job.'
-
 ---
 
 '$[[ inputs.as ]]':
@@ -99,11 +94,6 @@ spec:
   needs: $[[ inputs.needs ]]
   rules: $[[ inputs.rules ]]
   allow_failure: $[[ inputs.allow_failure ]]
-  cache:
-    key: "$__CACHE_KEY_HACK"
-    policy: $[[ inputs.cache_policy ]]
-    paths:
-      - $TF_ROOT/.terraform/
   variables:
     # FIXME: work around to make slashes work in `cache:key`. see https://gitlab.com/gitlab-org/gitlab/-/issues/439898
     __CACHE_KEY_HACK: "$[[ inputs.root_dir ]]"