ffmpeg 4.2: Remove --enable-libass.
ffmpeg 4.2: Remove --enable-libass.

Build fails on GCC2:
ERROR: libass not found using pkg-config
haikuports/haikuports,Begasus/haikuports,Begasus/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports