Trump got the required number without the endorsement of Cruz, Ryan, Romney and the Bushes (among others). They've made themselves worse than irrelevant.
JMHO
Well the nice thing now is the tables are turned, since rather than it being a question of Trump seeking their endorsement, it becomes a question of whether their endorsement of Trump is done in a way that will eventually earn Trump’s endorsement of them - or whether he’ll just leave them hanging and let all his supporters do as they will, which could mean primary defeats for some of them.
LOL.....those folks are getting their just desserts. Irrelevancy must be painful.
They can always go work for Hillary's campaign.
I think this just goes to show Trump doesn’t need them, and that’s a good thing!!