Run the pre-commit job anywhere.

There's no need to run it in a specific runner, but I did because I
set tags on the runners but didn't set them to run untagged (fixed in
gitlab-runner-docker@dfc42dda).

.gitlab-ci.yml

@@ -8,7 +8,6 @@ stages:
 
 pre-commit:
   stage: test
-  tags: ["ns4.shore.co.il"]
   image: adarnimrod/ci-images:pre-commit
   variables:
     XDG_CACHE_HOME: "$CI_PROJECT_DIR/.cache"