Disable test-openvino-linux job temporarily (pytorch#17685)

Temporarily disable the test-openvino-linux job until
pytorch#17684 is fixed.

Author: larryliu0820

.github/workflows/pull.yml

@@ -919,6 +919,7 @@ jobs:
   test-openvino-linux:
     name: test-openvino-linux
     uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@main
+    if: false # TODO: fix https://github.com/pytorch/executorch/issues/17684
     permissions:
       id-token: write
       contents: read