scsi: target: Remove unused declarations

Commit 13247018d68f ("scsi: target: iscsi: Fix hang in the iSCSI login
code") removed iscsi_handle_login_thread_timeout() but left declaration.

Commit 3e1c81a95f0d ("iscsi-target: Refactor RX PDU logic + export request
PDU handling") left iscsi_target_get_initial_payload() declaration.

Commit d703ce2f7f4d ("iscsi/iser-target: Convert to command priv_size
usage") remove iscsit_alloc_cmd() but left declaration.

And finally, a few other declarations were never implenmented since
introduction in commit e48354ce078c ("iscsi-target: Add iSCSI fabric
support for target v4.1").

Signed-off-by: Yue Haibing <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/target/iscsi/iscsi_target.h

···
 struct sockaddr_storage;
 
 extern struct iscsi_tiqn *iscsit_get_tiqn_for_login(unsigned char *);
-extern struct iscsi_tiqn *iscsit_get_tiqn(unsigned char *, int);
 extern void iscsit_put_tiqn_for_login(struct iscsi_tiqn *);
 extern struct iscsi_tiqn *iscsit_add_tiqn(unsigned char *);
 extern void iscsit_del_tiqn(struct iscsi_tiqn *);
···
 extern int iscsit_logout_closesession(struct iscsit_cmd *, struct iscsit_conn *);
 extern int iscsit_logout_closeconnection(struct iscsit_cmd *, struct iscsit_conn *);
 extern int iscsit_logout_removeconnforrecovery(struct iscsit_cmd *, struct iscsit_conn *);
-extern int iscsit_send_async_msg(struct iscsit_conn *, u16, u8, u8);
 extern int iscsit_build_r2ts_for_cmd(struct iscsit_conn *, struct iscsit_cmd *, bool recovery);
 extern void iscsit_thread_get_cpumask(struct iscsit_conn *);
 extern int iscsi_target_tx_thread(void *);

drivers/target/iscsi/iscsi_target_login.h

···
 extern void iscsi_post_login_handler(struct iscsi_np *, struct iscsit_conn *, u8);
 extern void iscsi_target_login_sess_out(struct iscsit_conn *, bool, bool);
 extern int iscsi_target_login_thread(void *);
-extern void iscsi_handle_login_thread_timeout(struct timer_list *t);
 
 #endif   /*** ISCSI_TARGET_LOGIN_H ***/

drivers/target/iscsi/iscsi_target_nego.h

···
 		unsigned char *);
 extern int iscsi_target_check_login_request(struct iscsit_conn *,
 		struct iscsi_login *);
-extern int iscsi_target_get_initial_payload(struct iscsit_conn *,
-		struct iscsi_login *);
 extern int iscsi_target_locate_portal(struct iscsi_np *, struct iscsit_conn *,
 		struct iscsi_login *);
 extern int iscsi_target_start_negotiation(

drivers/target/iscsi/iscsi_target_tpg.h

···
 			int);
 extern int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *);
 extern int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *, int);
-extern struct iscsi_node_acl *iscsit_tpg_add_initiator_node_acl(
-			struct iscsi_portal_group *, const char *, u32);
-extern void iscsit_tpg_del_initiator_node_acl(struct iscsi_portal_group *,
-			struct se_node_acl *);
 extern struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(struct iscsit_session *);
-extern void iscsit_tpg_del_external_nps(struct iscsi_tpg_np *);
 extern struct iscsi_tpg_np *iscsit_tpg_locate_child_np(struct iscsi_tpg_np *, int);
 extern struct iscsi_tpg_np *iscsit_tpg_add_network_portal(struct iscsi_portal_group *,
 			struct sockaddr_storage *, struct iscsi_tpg_np *,

drivers/target/iscsi/iscsi_target_util.h

···
 extern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsit_cmd *);
 extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsit_cmd *);
 extern void iscsit_free_r2ts_from_list(struct iscsit_cmd *);
-extern struct iscsit_cmd *iscsit_alloc_cmd(struct iscsit_conn *, gfp_t);
 extern struct iscsit_cmd *iscsit_allocate_cmd(struct iscsit_conn *, int);
 extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsit_cmd *, u32);
 extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsit_cmd *);
···
 extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsit_conn *);
 extern int iscsit_add_cmd_to_response_queue(struct iscsit_cmd *, struct iscsit_conn *, u8);
 extern struct iscsi_queue_req *iscsit_get_cmd_from_response_queue(struct iscsit_conn *);
-extern void iscsit_remove_cmd_from_tx_queues(struct iscsit_cmd *, struct iscsit_conn *);
 extern bool iscsit_conn_all_queues_empty(struct iscsit_conn *);
 extern void iscsit_free_queue_reqs_for_conn(struct iscsit_conn *);
 extern void iscsit_release_cmd(struct iscsit_cmd *);
···
 extern int iscsit_fe_sendpage_sg(struct iscsit_cmd *, struct iscsit_conn *);
 extern int iscsit_tx_login_rsp(struct iscsit_conn *, u8, u8);
 extern void iscsit_print_session_params(struct iscsit_session *);
-extern int iscsit_print_dev_to_proc(char *, char **, off_t, int);
-extern int iscsit_print_sessions_to_proc(char *, char **, off_t, int);
-extern int iscsit_print_tpg_to_proc(char *, char **, off_t, int);
 extern int rx_data(struct iscsit_conn *, struct kvec *, int, int);
 extern int tx_data(struct iscsit_conn *, struct kvec *, int, int);
 extern void iscsit_collect_login_stats(struct iscsit_conn *, u8, u8);