ixgbevf: Remove unused function declarations

ixgbe_napi_add_all()/ixgbe_napi_del_all() are declared but never implemented in
commit 92915f71 ("ixgbevf: Driver main and ethool interface module and main header")
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230803141904.15316-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/intel/ixgbevf/ixgbevf.h

@@ -486,9 +486,6 @@ static inline int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring,
 { return 0; }
 #endif /* CONFIG_IXGBEVF_IPSEC */
 
-void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter);
-void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter);
-
 #define ixgbevf_hw_to_netdev(hw) \
 	(((struct ixgbevf_adapter *)(hw)->back)->netdev)