ALSA: bebob: Remove unused function prototype

snd_bebob_stream_map() is not defined.
Signed-off-by: NTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/firewire/bebob/bebob.h

@@ -208,8 +208,6 @@ int snd_bebob_stream_set_rate(struct snd_bebob *bebob, unsigned int rate);
 int snd_bebob_stream_check_internal_clock(struct snd_bebob *bebob,
 					  bool *internal);
 int snd_bebob_stream_discover(struct snd_bebob *bebob);
-int snd_bebob_stream_map(struct snd_bebob *bebob,
-			 struct amdtp_stream *stream);
 int snd_bebob_stream_init_duplex(struct snd_bebob *bebob);
 int snd_bebob_stream_start_duplex(struct snd_bebob *bebob, unsigned int rate);
 void snd_bebob_stream_stop_duplex(struct snd_bebob *bebob);