Remove -ab 64k from ffmpeg options, this is now default.

patch by Benoit Fouet, benoit.fouet purplelabs com

Originally committed as revision 8346 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/regression.sh

@@ -114,7 +114,7 @@ fi
 # create the data directory if it does not exist
 mkdir -p $datadir
 
-FFMPEG_OPTS="-y -flags +bitexact -dct fastint -idct simple -ab 64k"
+FFMPEG_OPTS="-y -flags +bitexact -dct fastint -idct simple"
 
 do_ffmpeg()
 {