ip: remove unused function parameter

Type: refactor

Signed-off-by: Simon Zhang <yuwei1.zhang@intel.com>
Change-Id: I8674ff5f6f6336b256b7df8187afbb36ddef71fb
diff --git a/src/vnet/ip/ip6_forward.h b/src/vnet/ip/ip6_forward.h
index 44744c0..7f6eb0c 100644
--- a/src/vnet/ip/ip6_forward.h
+++ b/src/vnet/ip/ip6_forward.h
@@ -108,11 +108,9 @@
 	  ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0);
 	  ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p1);
 
-	  lbi0 = ip6_fib_table_fwding_lookup (im,
-					      vnet_buffer (p0)->ip.fib_index,
+	  lbi0 = ip6_fib_table_fwding_lookup (vnet_buffer (p0)->ip.fib_index,
 					      dst_addr0);
-	  lbi1 = ip6_fib_table_fwding_lookup (im,
-					      vnet_buffer (p1)->ip.fib_index,
+	  lbi1 = ip6_fib_table_fwding_lookup (vnet_buffer (p1)->ip.fib_index,
 					      dst_addr1);
 
 	  lb0 = load_balance_get (lbi0);
@@ -237,8 +235,7 @@
 	  ip0 = vlib_buffer_get_current (p0);
 	  dst_addr0 = &ip0->dst_address;
 	  ip_lookup_set_buffer_fib_index (im->fib_index_by_sw_if_index, p0);
-	  lbi0 = ip6_fib_table_fwding_lookup (im,
-					      vnet_buffer (p0)->ip.fib_index,
+	  lbi0 = ip6_fib_table_fwding_lookup (vnet_buffer (p0)->ip.fib_index,
 					      dst_addr0);
 
 	  lb0 = load_balance_get (lbi0);