remove an unused function.

Funny enough, compiling with -O6 gives no warning, whereas -O2 gives
a warning for an unused function declared static.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@17330 65c4cc65-6c06-0410-ace0-fbb531ad65f3

formats/format_ogg_vorbis.c

@@ -523,12 +523,6 @@ static off_t ogg_vorbis_tell(struct ast_filestream *s)
 	return -1;
 }
 
-static char *ogg_vorbis_getcomment(struct ast_filestream *s)
-{
-	ast_log(LOG_WARNING, "Getting comments is not supported on OGG/Vorbis streams!\n");
-	return NULL;
-}
-
 static struct ast_format_lock me = { .usecnt = -1 };
 
 static const struct ast_format vorbis_f = {