tipc: Eliminate an unused symbolic constant in link code

Removes a symbol that is not referenced anywhere by TIPC's link code.
Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/link.c

@@ -48,12 +48,6 @@
 
 #define INVALID_SESSION 0x10000
 
-/*
- * Limit for deferred reception queue:
- */
-
-#define DEF_QUEUE_LIMIT 256u
-
 /*
  * Link state events:
  */