The Conservative MP was speaking after the IAAF evaluation commission completed a two-day visit to London to assess the city's bid for the 2017 World Championships.
Nearing completion: An aerial view of the Olympic Stadium in Stratford
One of the main contentious issues surrounding the bid is the continuing legal row over the Olympic Stadium's future, with Tottenham seeking a judicial review of the decision to award it to West Ham after the London 2012 Games.
The review will be heard on October 18 but Robertson believes it is pointless after Tottenham chairman Daniel Levy previously expressed his intention to remain in north London.
'It would clearly be a good thing (if Tottenham dropped the judicial review),' he said.
Alternative: Spurs are planning to build a new stadium near White Hart Lane
'I think the point about the Tottenham legal action is that ultimately now it is completely pointless because their chairman has come out and made a commitment - and I congratulate him for that - to stay and redevelop in Tottenham.
'He made that commitment in the wake of the travels last summer so there is really no point trying to judicially review this stadium any more.
'He has had a full and final offer from (London mayor) Boris (Johnson, to stay in Tottenham) and I think it is now completely pointless keeping that judicial review in place.'
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