Build/Test Tools: Update the Playground PR comment in GitHub Actions.

This changeset removes the "Plugin and Theme Directories cannot be accessed within Playground" bullet point from the Playground Pull Request Comment GitHub Action, as it is not the case anymore.

Props audrasjb, westonruter.
Fixes #64578.



git-svn-id: https://develop.svn.wordpress.org/trunk@61613 602fd350-edb4-49c9-b593-d223f7449a82

Author: audrasjb

.github/workflows/pull-request-comments.yml

@@ -167,7 +167,6 @@ jobs:
             [WordPress Playground](https://developer.wordpress.org/playground/) is an experimental project that creates a full WordPress instance entirely within the browser.
 
             ### Some things to be aware of
-            - The Plugin and Theme Directories cannot be accessed within Playground.
             - All changes will be lost when closing a tab with a Playground instance.
             - All changes will be lost when refreshing the page.
             - A fresh instance is created each time the link below is clicked.