ionic: Remove unused declarations

Commit fbfb8031533c ("ionic: Add hardware init and device commands")
declared but never implemented ionic_q_rewind()/ionic_set_dma_mask().
Commit 969f84394604 ("ionic: sync the filters in the work task")
declared but never implemented ionic_rx_filters_need_sync().

Signed-off-by: Yue Haibing <[e-mail]>
Reviewed-by: Brett Creeley <[e-mail]>
Acked-by: Shannon Nelson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/pensando/ionic/ionic.h

···
 int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_wait);
 void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status,
 				 int err);
-int ionic_set_dma_mask(struct ionic *ionic);
 int ionic_setup(struct ionic *ionic);
 
 int ionic_identify(struct ionic *ionic);

drivers/net/ethernet/pensando/ionic/ionic_dev.h

···
 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
 		  void *cb_arg);
-void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
 		     unsigned int stop_index);
 int ionic_heartbeat_check(struct ionic *ionic);

drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h

···
 struct ionic_rx_filter *ionic_rx_filter_rxsteer(struct ionic_lif *lif);
 void ionic_rx_filter_sync(struct ionic_lif *lif);
 int ionic_lif_list_addr(struct ionic_lif *lif, const u8 *addr, bool mode);
-int ionic_rx_filters_need_sync(struct ionic_lif *lif);
 int ionic_lif_vlan_add(struct ionic_lif *lif, const u16 vid);
 int ionic_lif_vlan_del(struct ionic_lif *lif, const u16 vid);