Hi slpc04, welcome to the forum and thanks for the compliments.
Unfortuniatly there is now way to remove the famous thing of Max Skills. Believe me, I wasn't even planning on making him famous do to the fact a lot of members don't even like a famous sim here for the same reasons you want it to be removed. Sorry, but you can't. It even shows up in games without Late Night, as Lenka can confirm. Max got famous in the first few weeks because he was playing instruments in the park or somewhere else around his town and the famous sims keep popping up out of nowhere being his friends by just listening to his music.
And his interest in his engaged sim's brother... well... I've find out really soon ingame he is gay. It didn't bugged me actually as I was not planning on reproduction. So he could choose for himself which sexe he prefers.
Though, there's one downside: it totally don't fit his lifetime wish AT ALL, haha! Unless you are talking about adoption.
But oh well, ust see it as a challenge.