Remove .ci/docker trigger on Apple workflows (pytorch#6787)

Author: huydhn

.github/workflows/apple.yml

@@ -7,7 +7,6 @@ on:
       - release/*
   pull_request:
     paths:
-      - .ci/docker/**
       - .ci/scripts/setup-ios.sh
       - .github/workflows/apple.yml
       - install_requirements.sh