hs: Remove v2 stats

We still keep v2 rendezvous stats since we will allow them until the network
has entirely phased out.

Related to #40266

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/core/or/status.c

@@ -105,10 +105,9 @@ log_onion_service_stats(void)
   }
 
   log_notice(LD_HEARTBEAT,
-             "Our onion service%s received %u v2 and %u v3 INTRODUCE2 cells "
+             "Our onion service%s received %u v3 INTRODUCE2 cells "
              "and attempted to launch %d rendezvous circuits.",
              num_services == 1 ? "" : "s",
-             hs_stats_get_n_introduce2_v2_cells(),
              hs_stats_get_n_introduce2_v3_cells(),
              hs_stats_get_n_rendezvous_launches());
 }