Remove `animation-after-navigation` DevTools test

* This is to unblock crrev.com/c/5272919
* We're going to write this as an E2E test in devtools-frontend codebase

Bug: b/319594096
Change-Id: I0766589519e86970a7a632843ffc29ea62e46cd1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5314508


Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Commit-Queue: Philip Pfaffe <pfaffe@chromium.org>
Auto-Submit: Ergün Erdoğmuş <ergunsh@chromium.org>
Commit-Queue: Ergün Erdoğmuş <ergunsh@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1263893}