Even IF 45 is successful in having Mueller removed from leading the investigation, his problems do not go away.
The investigation will continue. Indictments have already been handed down, guilty pleas have already been entered, and evidence is STILL being collected.
What many people (particularly 45 supporters) fail to realize is that evidence of wrong-doing by those within the campaign, and 45's personal businesses, has already been uncovered. NONE of that will go away. Whatever hasn't been directly related to the Russia investigation has already been passed on to other agencies for continued investigation. Here's an simple example to explain it, if the police are collecting evidence against a drug trafficker, and they run across some dead bodies, they call homicide investigators and a NEW investigation begins. Same premise with the Mueller investigation. Even if evidence of 45 cooperating with the Russians to sway the election in his favor is not found, evidence of any other crimes he or his representatives may have committed, gets collected and new investigations into those crimes is begun.
It's quite likely that the thing that brings 45 down is going to be all the shenanigans in relation to covering-up 45's screwing around with Playmates and porn stars.
That's the great irony of it all. It was the cover-up that brought down Nixon, not the actual Watergate break-in. It was lying during his testimony in a court case that got Clinton impeached, not the actual activity of screwing around. 45 is incapable of telling the truth. His ego cannot tolerate being exposed for the liar he's always been. His own behavior is what will be his undoing. What ultimately rids us of this orange shit-stain will be his inability to keep his tiny pecker in his pants, or his stupid mouth shut.