Mac: remove ScreenTime field trial testing config

ScreenTime breaks full-screen low power mode.

Bug: 1303645, 1154287
Change-Id: I995d2ddc3db4e75e708040efcd430e238808bdbe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3669559
Reviewed-by: Jayson Adams <shrike@chromium.org>
Commit-Queue: Leonard Grey <lgrey@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1007930}
NOKEYCHECK=True
GitOrigin-RevId: 39748131175b5455132b735eb88460c6f937b6ec
1 file changed