Revert "[FaceGaze] Persist strings for held macros in bubble UI"

This reverts commit d598953e.

Reason for revert: Caused failure.
https://ci.chromium.org/ui/p/chromium/builders/ci/linux-presubmit/20867/overview

Original change's description:
> [FaceGaze] Persist strings for held macros in bubble UI
>
> * Persist strings for macros that are held.
> * Due to complexities with tracking state, if new actions are triggered
> while the macro is held, the strings for the new actions will populate
> the bubble UI immediately, but not include the held macros. When the
> bubble UI resets after a timeout, the held macros will populate the
> bubble UI again at that time.
> * Add tests.
>
> Fixed: 375235384
> Change-Id: I22dcd68229dc1da033668051ac615ff09f378f0f
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5985158


> Reviewed-by: Akihiro Ota <akihiroota@chromium.org>
> Commit-Queue: Amanda Lin Dietz <aldietz@google.com>
> Cr-Commit-Position: refs/heads/main@{#1378443}

Change-Id: Ic16118875d967b8e25d54ef83e6ae98d4dcd9579
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5998051
Commit-Queue: Ravjit Uppal <ravjit@chromium.org>
Owners-Override: Keishi Hattori <keishi@chromium.org>
Auto-Submit: Keishi Hattori <keishi@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1378971}