Remove make playwright step from e2e CI workflow

The playwright target was inlined into test-e2e, so the separate
step is no longer needed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/pull-e2e-tests.yml

@@ -37,7 +37,6 @@ jobs:
           TAGS: bindata sqlite sqlite_unlock_notify
       - run: make deps-frontend
       - run: make frontend
-      - run: make playwright
       - run: |
           mkdir -p custom/conf
           cat <<'EOF' > custom/conf/app.ini