Revert "ALSA: fireworks: add support for AudioFire2 quirk"

This reverts commit 9c6893e0.

The fix is superseded by the next commit as a better implementation
for supporting AudioFire2/AudioFire4/AudioFirePre8 quirks.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/fireworks/fireworks.c

@@ -248,8 +248,6 @@ efw_probe(struct fw_unit *unit,
 	err = get_hardware_info(efw);
 	if (err < 0)
 		goto error;
-	if (entry->model_id == MODEL_ECHO_AUDIOFIRE_2)
-		efw->is_af2 = true;
 	if (entry->model_id == MODEL_ECHO_AUDIOFIRE_9)
 		efw->is_af9 = true;
 

sound/firewire/fireworks/fireworks.h

@@ -70,7 +70,6 @@ struct snd_efw {
 	bool resp_addr_changable;
 
 	/* for quirks */
-	bool is_af2;
 	bool is_af9;
 	u32 firmware_version;
 

sound/firewire/fireworks/fireworks_stream.c

@@ -172,9 +172,6 @@ int snd_efw_stream_init_duplex(struct snd_efw *efw)
 	efw->tx_stream.flags |= CIP_DBC_IS_END_EVENT;
 	/* Fireworks reset dbc at bus reset. */
 	efw->tx_stream.flags |= CIP_SKIP_DBC_ZERO_CHECK;
-	/* AudioFire2 starts packets with non-zero dbc. */
-	if (efw->is_af2)
-		efw->tx_stream.flags |= CIP_SKIP_INIT_DBC_CHECK;
 	/* AudioFire9 always reports wrong dbs. */
 	if (efw->is_af9)
 		efw->tx_stream.flags |= CIP_WRONG_DBS;