Remove short and short array properties

There weren't any properties of those types, and it looks like there's
no reason to keep shorts distinct from ints.

TEST=Build and tests (through `cros_workon_make`) succeed
BUG=none

Change-Id: Ib8a83e31e1f128d93ace56d256011f434ab61be8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/gestures/+/1988601
Tested-by: Harry Cutts <hcutts@chromium.org>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Commit-Queue: Harry Cutts <hcutts@chromium.org>
5 files changed