1. you can simply delete the three movies:

freelancer\data\movies\da_logo_final.wmv
freelancer\data\movies\fl_intro.wmv
freelancer\data\movies\mgs_logo_final.wmv

2. you can edit freelancer\exe\freelancer.ini:

replace

[Startup
movie_file = movies\MGS_Logo_Final.wmv
movie_file = movies\DA_Logo_Final.wmv
movie_file = movies\FL_Intro.wmv

with

[Startup
;movie_file = movies\MGS_Logo_Final.wmv
;movie_file = movies\DA_Logo_Final.wmv
;movie_file = movies\FL_Intro.wmv