sctp: remove macros sctp_local_bh_{disable|enable}

Redefined local_bh_{disable|enable} to sctp_local_bh_{disable|enable}
for user space friendly code which we haven't use in years, so removing them.

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 6ffb6c1..8e5fdea 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -368,9 +368,9 @@
 {
 	struct sctp_association *asoc;
 
-	sctp_local_bh_disable();
+	local_bh_disable();
 	asoc = __sctp_endpoint_lookup_assoc(ep, paddr, transport);
-	sctp_local_bh_enable();
+	local_bh_enable();
 
 	return asoc;
 }