scsi: libsas: Remove unused declarations

Commit 042ebd2 ("scsi: libsas: kill useless ha_event and do some
cleanup") removed sas_hae_reset() but not its declaration.  Commit
2908d77 ("[SCSI] aic94xx: new driver") declared but never implemented
other functions.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20230809132249.37948-1-yuehaibing@huawei.com
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Yue Haibing

drivers/scsi/libsas/sas_internal.h

@@ -41,13 +41,7 @@ struct sas_phy_data {
 
 void sas_scsi_recover_host(struct Scsi_Host *shost);
 
-int sas_show_class(enum sas_class class, char *buf);
-int sas_show_proto(enum sas_protocol proto, char *buf);
-int sas_show_linkrate(enum sas_linkrate linkrate, char *buf);
-int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf);
-
 int  sas_register_phys(struct sas_ha_struct *sas_ha);
-void sas_unregister_phys(struct sas_ha_struct *sas_ha);
 
 struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy, gfp_t gfp_flags);
 void sas_free_event(struct asd_sas_event *event);
@@ -91,7 +85,6 @@ int sas_get_report_phy_sata(struct domain_device *dev, int phy_id,
 int sas_get_phy_attached_dev(struct domain_device *dev, int phy_id,
 			     u8 *sas_addr, enum sas_device_type *type);
 int sas_try_ata_reset(struct asd_sas_phy *phy);
-void sas_hae_reset(struct work_struct *work);
 
 void sas_free_device(struct kref *kref);
 void sas_destruct_devices(struct asd_sas_port *port);

include/scsi/libsas.h

@@ -727,8 +727,6 @@ extern struct device_attribute dev_attr_phy_event_threshold;
 
 int  sas_discover_root_expander(struct domain_device *);
 
-void sas_init_ex_attr(void);
-
 int  sas_ex_revalidate_domain(struct domain_device *);
 
 void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);