CI: Remove unused tags

.gitlab-ci.yml

@@ -20,8 +20,6 @@ spellcheck:
     - npm i -g markdown-spellcheck
   script:
     - mdspell -r -n -a --en-gb "content/posts/*.md" "content/posts/*.markdown"
-  tags:
-    - docker
 
 build:
   image: docker.io/cibuilds/hugo:0.73
@@ -81,8 +79,6 @@ test:
     - podman rm testing
   except:
     - deploy
-  tags:
-    - docker
 
 test-deploy:
   stage: test
@@ -100,5 +96,3 @@ test-deploy:
     - podman rm testing
   only:
     - deploy
-  tags:
-    - docker