p2p: drop onions from IsAddrV1Compatible(), no longer relay torv2

src/netaddress.cpp

@@ -522,7 +522,6 @@ bool CNetAddr::IsAddrV1Compatible() const
     case NET_INTERNAL:
         return true;
     case NET_ONION:
-        return m_addr.size() == ADDR_TORV2_SIZE;
     case NET_I2P:
     case NET_CJDNS:
         return false;

src/test/net_tests.cpp

@@ -613,7 +613,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s >> addr;
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsTor());
-    BOOST_CHECK(addr.IsAddrV1Compatible());
+    BOOST_CHECK(!addr.IsAddrV1Compatible());
     BOOST_CHECK_EQUAL(addr.ToString(), "6hzph5hv6337r6p2.onion");
     BOOST_REQUIRE(s.empty());