AMSTERDAM — Facing a three-goal deficit at halftime in their Champions League semifinal, Tottenham’s players only had to think back 24 hours or so to find a source of inspiration.”We saw Liverpool last night — it goes to show it’s not over until it is over,” Tottenham fullback Danny Rose said.In this year’s Champions League, that certainly seems to be the case. Just a day after Liverpool’s stunning win over Barcelona, Tottenham pulled off another epic comeback Wednesday.Lucas Moura completed a hat trick in the sixth minute of injury time as Tottenham rallied to beat Ajax 3-2 and reach its first Champions League final, ending a remarkable run by the young Dutch team that had knocked off some of Europe’s biggest clubs along the way.It was a rally that was eerily similar to the one the previous night at Anfield, where Liverpool erased a 3-0 deficit from the first leg by beating Barcelona 4-0 at home.In Amsterdam, Moura nearly single-handedly helped Tottenham pull off a similar feat.Ajax seemed to have the two-legged semifinal wrapped up by halftime after teenage captain Matthijs de Ligt and Hakim Ziyech netted to put it 2-0 up at the break — and 3-0 on aggregate.But…