Charles said in a splashy magazine article about 10-15 years ago that should he become king he will disolve the monarchy. This was before Diana died. In the article he said he doesn’t want to be king, he wants to putter on his land and grow things.
The Prince of Wales has never said any such thing. If a magazine article said he did, it was lying.
Besides anything else, he would not have the power to do that. A King of the United Kingdom can abdicate - in which case somebody else would become King (William, if Charles abdicated). He cannot dissolve the monarchy. Parliament has that power - the King does not.