resolve: drop redundant call of link_allocate_scopes() and link_add_rrs()

In `manager_process_link()`, the function `link_update()` is called just
after `link_process_rtnl()`, and `link_update()` also calls
`link_allocate_scopes()` and `link_add_rrs()`. Hence, the calls in
`link_process_rtnl()` are redundant.

src/resolve/resolved-link.c

@@ -247,9 +247,6 @@ int link_process_rtnl(Link *l, sd_netlink_message *m) {
                         return r;
         }
 
-        link_allocate_scopes(l);
-        link_add_rrs(l, false);
-
         return 0;
 }