Revert "Add fiedtrial testing config for Reader Mode feature on iOS."

This reverts commit 069978a0791ee0fccbfebceb2d4ed2576faf8e19.

Likely culprit of https://ci.chromium.org/ui/p/chromium/builders/ci/ios-simulator-full-configs/72436/test-results

Change-Id: I60cb69ae6325f0018b70817c42bc34fae5364285
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6770345
Reviewed-by: Michael Wilson <mjwilson@chromium.org>
Auto-Submit: Anthony Vallée-Dubois <anthonyvd@chromium.org>
Owners-Override: Anthony Vallée-Dubois <anthonyvd@chromium.org>
Commit-Queue: Anthony Vallée-Dubois <anthonyvd@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1489001}
NOKEYCHECK=True
GitOrigin-RevId: d9ff94b43878e41fb3e03247d09fc77919ce95f7
1 file changed