Drop JDK 17 system tests until Gradle supports Java 17

See gh-27367

ci/pipeline.yml

@@ -817,42 +817,13 @@ jobs:
     - put: slack-alert
       params:
         <<: *slack-success-params
-- name: jdk17-run-system-tests
-  serial: true
-  public: true
-  plan:
-    - get: ci-image-jdk17
-    - get: git-repo
-    - get: paketo-builder-base-image
-      trigger: true
-    - get: daily
-      trigger: true
-    - do:
-        - task: run-system-tests
-          image: ci-image-jdk17
-          privileged: true
-          timeout: ((task-timeout))
-          file: git-repo/ci/tasks/run-system-tests.yml
-          params:
-            BRANCH: ((branch))
-            TOOLCHAIN_JAVA_VERSION: 17
-            <<: *gradle-enterprise-task-params
-            <<: *docker-hub-task-params
-      on_failure:
-        do:
-          - put: slack-alert
-            params:
-              <<: *slack-fail-params
-    - put: slack-alert
-      params:
-        <<: *slack-success-params
 groups:
 - name: "builds"
   jobs: ["build", "jdk11-build", "jdk16-build", "jdk17-build", "windows-build"]
 - name: "releases"
   jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release", "publish-gradle-plugin", "publish-to-sdkman", "update-homebrew-tap"]
 - name: "system-tests"
-  jobs: ["run-system-tests", "jdk11-run-system-tests", "jdk16-run-system-tests", "jdk17-run-system-tests"]
+  jobs: ["run-system-tests", "jdk11-run-system-tests", "jdk16-run-system-tests"]
 - name: "ci-images"
   jobs: ["build-ci-images", "detect-docker-updates", "detect-jdk-updates", "detect-ubuntu-image-updates"]
 - name: "pull-requests"