QTimeLine::reset() never made it into the public API. Instead
QTimeLine::start() always starts from the beginning.
Remove the commented-out test for reset() and related remnants in other
tests. Restarting a timeline using QTimeLine::start() is already tested
by the restart() test function.
Change-Id: Ia5c767ddae0781d645a407fbea76e80672895aab
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>