[net] Remove CConnman::Options.m_asmap

This data member was introduced in ec45646de9 but never used.

src/net.h

@@ -768,7 +768,6 @@ public:
         bool m_use_addrman_outgoing = true;
         std::vector<std::string> m_specified_outgoing;
         std::vector<std::string> m_added_nodes;
-        std::vector<bool> m_asmap;
         bool m_i2p_accept_incoming;
     };