GitLab

Remove the close button from the disable confirmation dialog as
it duplicates functionality already in the cancel button. Remove
the confirmation description as it repeats the title.

Screenshots:

Before:
Autoclick: https://screenshot.googleplex.com/uB3ZhRSmVTGSLRg.png
Switch Access: https://screenshot.googleplex.com/7WsEbWDBb77MwDg

After:
Autoclick: https://screenshot.googleplex.com/3DNmukRFCNQ6WoG.png
Switch Access: https://screenshot.googleplex.com/3xveLtXSYo86cYL.png

Bug: 1125247
Change-Id: Iaf0f008e7e3d6f8fa17ec58eaf7575c27df90303
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2466508
Commit-Queue: Gordon Seto <gordonseto@google.com>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Azeem Arshad <azeemarshad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#816835}