Robbie Lawler -- UFC Sale Means Nothing to Me ... I'm Here to Kick Ass, Not Make Movies! (VIDEO)

Robbie Lawler says his next opponent, Tyron Woodley, can worry about getting into hair and makeup -- but he's more focused on beating his ass in the Octagon.

We asked Robbie about the $4 billion purchase of the UFC by Hollywood talent agency WME/IMG -- and honestly ... he couldn't care less.

As Dana White told us on "TMZ Live" ... the deal is going to open up all kinds of acting and marketing deals for his fighters, but Robbie says first and foremost, he's a fighter. What's interesting is ... his UFC 201 opponent, Woodley, is already doing a movie.

Perfect opportunity for Lawler to talk some smack.