RDS: inc_purge() transport function unused - remove it

Signed-off-by: Andy Grover <andy.grover@oracle.com>
diff --git a/net/rds/tcp_recv.c b/net/rds/tcp_recv.c
index ea73829..49c9660 100644
--- a/net/rds/tcp_recv.c
+++ b/net/rds/tcp_recv.c
@@ -39,7 +39,7 @@
 
 static struct kmem_cache *rds_tcp_incoming_slab;
 
-void rds_tcp_inc_purge(struct rds_incoming *inc)
+static void rds_tcp_inc_purge(struct rds_incoming *inc)
 {
 	struct rds_tcp_incoming *tinc;
 	tinc = container_of(inc, struct rds_tcp_incoming, ti_inc);