Revert "Set request priority on Account Capabilities fetch"

This reverts commit fd2f9d0c617baeea73623eae74ec1df9cd79267a.

Experiment data [1] doesn't show any meaningful improvement from the higher request priority. Reverting to reduce code complexity.

[1] https://uma.googleplex.com/p/chrome/variations?sid=05f37507f8c5ab1ae975af8b7dd2480a

Bug: 298380074
Change-Id: I5b298c5d1c57c30a64c33df9143769f55e288dac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5419118
Reviewed-by: Alex Ilin <alexilin@chromium.org>
Commit-Queue: James Lee <ljjlee@google.com>
Auto-Submit: James Lee <ljjlee@google.com>
Cr-Commit-Position: refs/heads/main@{#1281819}
NOKEYCHECK=True
GitOrigin-RevId: ca6bfbbccf67337c6973a2708df8ac355f6328fa
3 files changed