Revert "Add a whitespace.txt file"

This reverts commit 6703fe28.

Reason for revert: Builders flipped, triggering first LUCI job

Original change's description:
> Add a whitespace.txt file
> 
> Bug: 869249
> Change-Id: Iab9eeade2427255ce167fb524b11e0e3f691a685
> Reviewed-on: https://chromium-review.googlesource.com/1161382
> Reviewed-by: Frank Barchard <fbarchard@chromium.org>
> Commit-Queue: Ryan Tseng <hinoka@chromium.org>
> Commit-Queue: Frank Barchard <fbarchard@chromium.org>

TBR=hinoka@chromium.org,fbarchard@chromium.org
No-Try: True

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 869249
Change-Id: I00a29051b8a1be048afe444cd7811b19c949fd85
Reviewed-on: https://chromium-review.googlesource.com/1167906Reviewed-by: Ryan Tseng <hinoka@chromium.org>

whitespace.txt

-Use this file to trigger builds