Double-click check was redoing what is essentially already done in input_server.
The way we were doing it, right clicking (or pressing a different button for the second click,
for that matter) wasn't clearing the fields remembered and thus not breaking the sequence.
So a third click returning to the correct sequence (in a short time) would get recognized
as a valid second click. So a quick left-right-left would be seen by that method as left-left.
Also, clean up a previous fix I committed. Removed the introduced Origin() method as it
is the LeftTop() method I was interested in and it is already existing.
Fix#8714
ed63a5d20c