ci: drop tests for unstable_createNodeManifest (#39233)

ci: remove node manifest tests

Author: mrstork

.circleci/config.yml

@@ -238,12 +238,6 @@ jobs:
       - e2e-test:
           test_path: integration-tests/gatsby-source-wordpress
 
-  integration_tests_node_manifest:
-    executor: node
-    steps:
-      - e2e-test:
-          test_path: integration-tests/node-manifest
-
   integration_tests_long_term_caching:
     executor: node
     steps:
@@ -681,8 +675,6 @@ workflows:
             - bootstrap
       - integration_tests_gatsby_source_wordpress:
           <<: *e2e-test-workflow
-      - integration_tests_node_manifest:
-          <<: *e2e-test-workflow
       - integration_tests_long_term_caching:
           <<: *e2e-test-workflow
       - integration_tests_cache_resilience: