elm_spinner.c: fix mouse spin never stop issue with mouse wheel with spinner widget.
elm_spinner.c: fix mouse spin never stop issue with mouse wheel with spinner widget.

Do not use a timer when the wheel is used to spin the spinner.
This fixes T604.
Special thanks JP for reporting.

rvandegrift/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,tasn/elementary,tasn/elementary