api: remove pull command

The api config supports pulling in the openapi schema's via a url, so there isn't a
need to pull this in manually and just run the code generation.

We also need to remove the `openshift-virt` target since this was removed from
image-builder-crc.

.github/workflows/dev-checks.yml

@@ -71,7 +71,7 @@ jobs:
       run: npm ci
     - name: Check for manual changes to API
       run: |
-        npm run api:generate
+        npm run api
         if [ -n "$(git status --porcelain)" ]; then
           echo
           echo "✗ API manually changed, please refer to the README for the procedure to follow for programmatically generated API endpoints."