Revert "Remove CI caches"

This reverts commit 34da59da.

.gitlab-ci.yml

@@ -9,7 +9,6 @@ before_script:
   - mkdir -p ~/.ssh
   - chmod 700 ~/.ssh
   - ssh-keyscan -t rsa $GITLAB_SERVER > ~/.ssh/known_hosts
-  - ./xcode-remove-caches.sh
 
 stages:
   - test