xsk: Wipe out dead zero_copy_allocator declarations

zero_copy_allocator has been removed back when Bjorn Topel introduced
xsk_buff_pool. Remove references to it that were dangling in the tree.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20211210171511.11574-1-maciej.fijalkowski@intel.com

drivers/net/ethernet/intel/i40e/i40e_xsk.h

@@ -22,7 +22,6 @@
 
 struct i40e_vsi;
 struct xsk_buff_pool;
-struct zero_copy_allocator;
 
 int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair);
 int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair);

drivers/net/ethernet/intel/ixgbe/ixgbe_txrx_common.h

@@ -35,8 +35,6 @@ int ixgbe_xsk_pool_setup(struct ixgbe_adapter *adapter,
 			 struct xsk_buff_pool *pool,
 			 u16 qid);
 
-void ixgbe_zca_free(struct zero_copy_allocator *alloc, unsigned long handle);
-
 bool ixgbe_alloc_rx_buffers_zc(struct ixgbe_ring *rx_ring, u16 cleaned_count);
 int ixgbe_clean_rx_irq_zc(struct ixgbe_q_vector *q_vector,
 			  struct ixgbe_ring *rx_ring,

include/net/xdp_priv.h

@@ -10,7 +10,6 @@ struct xdp_mem_allocator {
 	union {
 		void *allocator;
 		struct page_pool *page_pool;
-		struct zero_copy_allocator *zc_alloc;
 	};
 	struct rhash_head node;
 	struct rcu_head rcu;