Deprecate support for flattened output nodes

Change-Id: Id117e219146d9994340fb38c00233ea67db8929b
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vnet/interface_funcs.h b/src/vnet/interface_funcs.h
index 999b72e..26eef9b 100644
--- a/src/vnet/interface_funcs.h
+++ b/src/vnet/interface_funcs.h
@@ -301,9 +301,8 @@
   u32 is_deleted;
 } vnet_interface_output_runtime_t;
 
-/* Interface output functions. */
+/* Interface output function. */
 void *vnet_interface_output_node_multiarch_select (void);
-void *vnet_interface_output_node_flatten_multiarch_select (void);
 
 word vnet_sw_interface_compare (vnet_main_t * vnm, uword sw_if_index0,
 				uword sw_if_index1);