ci: Remove docker-in-docker extension from Code Quality job

Removes docker-in-docker extension from Code Quality job, which makes more on-damand use of docker-in-docker in our CI. This MR makes .docker:use-docker-in-docker job anchor restricted to use .docker:build-docker-in-docker job extensions, namely:

• release-image job
• build-gitpod-workspace-image job
• deploy-gitpod-workspace-image job

References

Updates !1186 (merged)

• !2038 (merged) re-enabled Code Quality job in CI for this repo.
• !2036 (merged) disabled Code Quality job in CI for this repo.
• !1229 (merged) Split .gitlab-ci.yml into templates
• !1186 (merged) Set default, workflow, and use rules in CI config

Signed-off-by: Takuya Noguchi takninnovationresearch@gmail.com