dnsmasq: Revert change for updating listeners when interface set changes.

This is now handled by the function
fixup_possible_existing_listener

Change-Id: Iedde8317b619830a494f7d1d82b3da7a6c6ac9e5
diff --git a/src/network.c b/src/network.c
index 6a8a433..5880974 100644
--- a/src/network.c
+++ b/src/network.c
@@ -986,21 +986,6 @@
 
         close_bound_listener(old_iface);
       }
-      else
-      {
-        struct listener **l, *listener;
-        for (l = &(daemon->listeners); *l; l = &((*l)->next)) {
-          struct irec *listener_iface = (*l)->iface;
-          if (listener_iface && new_iface) {
-            if (sockaddr_isequal(&listener_iface->addr, &new_iface->addr)) {
-              break;
-            }
-          }
-        }
-        listener = *l;
-        if ( listener )
-          listener->iface = new_iface;
-      }
     }
 
     /* remove wildchar listeners */