Multi: Use AnyEvent::Pg's last_query_start_time()
Multi: Use AnyEvent::Pg's last_query_start_time()

The solution that has been implemented upstream is a little different
from my patch, but it works well.

morkt/vndb,morkt/vndb,christian-roggia/vndb,christian-roggia/vndb,erengy/vndb,erengy/vndb,erengy/vndb,morkt/vndb,morkt/vndb,christian-roggia/vndb,morkt/vndb