cros_gestures: Delete

There doesn't seem to be any reference to it and the last real CL was in
2012.

BUG=none
TEST=CQ passes

Change-Id: I90865159d95593dba74b7a77bb141467cc4c84ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/1841526
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Katherine Threlkeld <kathrelkeld@chromium.org>
Reviewed-by: Harry Cutts <hcutts@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
14 files changed