Remove unused gesture properties

I assume the compiler didn't warn about it because they're still being
initialised in the constructor.

BUG=none
TEST=unit tests

Change-Id: I6cd48a4b26a47eefada05899b87f4e446b145d64
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/gestures/+/2135933
Tested-by: Harry Cutts <hcutts@chromium.org>
Auto-Submit: Harry Cutts <hcutts@chromium.org>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Commit-Queue: Sean O'Brien <seobrien@chromium.org>
2 files changed