Revert "Mouse: update for HaxeFlixel/flixel@62a0ee7b0d7adb31b496ff57fe635a4495f1f8b3"

This reverts commit e7ed7ab8ab96c27e209dd6a74ea885a3ff621d7c.
Revert "Mouse: More extensive docs and update for the refactor"

This reverts commit 2dc9d4191da6a839561c622e7a383286a3f2e92e.