RDMA/rxe: Remove some #defines from rxe_pool.h

RXE_POOL_ALIGN is only used in rxe_pool.c so move RXE_POOL_ALIGN to
rxe_pool.c from rxe_pool.h.  RXE_POOL_CACHE_FLAGS is never used so it is
deleted from rxe_pool.h

Link: https://lore.kernel.org/r/20211103050241.61293-8-rpearsonhpe@gmail.comSigned-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/sw/rxe/rxe_pool.c

@@ -6,6 +6,8 @@
 
 #include "rxe.h"
 
+#define RXE_POOL_ALIGN		(16)
+
 static const struct rxe_type_info {
 	const char *name;
 	size_t size;

drivers/infiniband/sw/rxe/rxe_pool.h

@@ -7,9 +7,6 @@
 #ifndef RXE_POOL_H
 #define RXE_POOL_H
 
-#define RXE_POOL_ALIGN		(16)
-#define RXE_POOL_CACHE_FLAGS	(0)
-
 enum rxe_pool_flags {
 	RXE_POOL_INDEX		= BIT(1),
 	RXE_POOL_KEY		= BIT(2),