Cosmetics: remove empty comments.

Originally committed as revision 16124 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -191,7 +191,7 @@ static int video_sync_method= -1;
 static int audio_sync_method= 0;
 static float audio_drift_threshold= 0.1;
 static int copy_ts= 0;
-static int opt_shortest = 0; //
+static int opt_shortest = 0;
 static int video_global_header = 0;
 static char *vstats_filename;
 static FILE *vstats_file;
@@ -216,7 +216,7 @@ static int64_t extra_size = 0;
 static int nb_frames_dup = 0;
 static int nb_frames_drop = 0;
 static int input_sync;
-static uint64_t limit_filesize = 0; //
+static uint64_t limit_filesize = 0;
 static int force_fps = 0;
 
 static int pgmyuv_compatibility_hack=0;