Kyle Richards, Mauricio Umansky Have No Chance of Reconciliation, Say Friends

Kyle Richards and Mauricio Umansky's marriage is beyond repair -- that's what close family and friends are saying about any hopes the estranged couple can still work things out ... TMZ has learned. Sources with direct knowledge tell TMZ the pair's relationship has reached the point of no return, and if they were to suddenly patch things up, those closest to them would be utterly flabbergasted. We're told some…