Remove 1.8 specific handling in `time_for`
Remove 1.8 specific handling in `time_for`

Ruby 1.8 didn't support `to_time` method on a Time object, and so there
was custom conversion of Date, DateTime objects to a Time object. This
is no more a problem.

mwpastore/sinatra,jkowens/sinatra,mwpastore/sinatra,sinatra/sinatra,ryanshaw/sinatra,burningTyger/sinatra,JonMidhir/sinatra,ryanshaw/sinatra,sinatra/sinatra,mwpastore/sinatra,burningTyger/sinatra,jkowens/sinatra,jkowens/sinatra,burningTyger/sinatra,JonMidhir/sinatra,JonMidhir/sinatra