Remove leftover variable.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@7523 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

tests/regression.sh

@@ -145,7 +145,6 @@ do_ffmpeg_crc()
 
 do_ffmpeg_nocheck()
 {
-    f="$1"
     shift
     echo $ffmpeg $FFMPEG_OPTS $*
     $ffmpeg $FFMPEG_OPTS -benchmark $* > $bench 2> /tmp/ffmpeg$$