FIB: use vlib-log for debugging

Change-Id: I9052202b8cbcf656e61d635253d515f0f3a8d145
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/fib/fib_entry_src.c b/src/vnet/fib/fib_entry_src.c
index 1b2d716..6868da6 100644
--- a/src/vnet/fib/fib_entry_src.c
+++ b/src/vnet/fib/fib_entry_src.c
@@ -692,8 +692,7 @@
     /*
      * uninstall the forwarding chain from the forwarding tables
      */
-    FIB_ENTRY_DBG(fib_entry, "uninstall: %d",
-		  fib_entry->fe_adj_index);
+    FIB_ENTRY_DBG(fib_entry, "uninstall");
 
     if (dpo_id_is_valid(&fib_entry->fe_lb))
     {