Revert "Scaling filter is changed to stop filtering small fingers"

This reverts commit 816c832c449c506e73761af5d9b807b80eb26954.

BUG=chrome-os-partner:39158
TEST=None

Change-Id: I25e210b0aea461b857b873dbafd3b17cee0d6e16
Reviewed-on: https://chromium-review.googlesource.com/265894
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Commit-Queue: Andrew de los Reyes <adlr@chromium.org>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
3 files changed