IB: remove the struct ib_phys_buf definition

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

include/rdma/ib_verbs.h

@@ -1251,11 +1251,6 @@ enum ib_access_flags {
 	IB_ACCESS_ON_DEMAND     = (1<<6),
 };
 
-struct ib_phys_buf {
-	u64      addr;
-	u64      size;
-};
-
 /*
  * XXX: these are apparently used for ->rereg_user_mr, no idea why they
  * are hidden here instead of a uapi header!