Revert "Add instrumentation tests for nav bar color animations"

This reverts commit 360cc531f6c67f37a6f4af09c407667f5d9a632d.

Reason for revert: testNavBarColorAnimationsEdgeToEdgeBottomChin failing on multiple bots. See b/397519804.

Original change's description:
> Add instrumentation tests for nav bar color animations
>
> Bug: 394443224
> Change-Id: I5b5cd3b27e30b641ee5b7eb278354b5e4052f512
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6239556
> Reviewed-by: Charles Hager <clhager@google.com>
> Commit-Queue: Eleanor Lee <eleanorlee@google.com>
> Reviewed-by: Wenyu Fu <wenyufu@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1421662}

Bug: 394443224
Change-Id: Ie62fc2d012a028a5e636dd709824b68717a34f5b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6278807
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Yue Zhang <yuezhanggg@chromium.org>
Reviewed-by: Yue Zhang <yuezhanggg@chromium.org>
Auto-Submit: Yue Zhang <yuezhanggg@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1421704}