refactor: remove submodule code from steps scripts

ci/steps/test.sh

@@ -6,11 +6,6 @@ main() {
 
   yarn --frozen-lockfile
 
-  git submodule update --init
-  # We do not `yarn vscode` to make test.sh faster.
-  # If the patch fails to apply, then it's likely already applied
-  yarn vscode:patch &> /dev/null || true
-
   yarn test
 }