wallet2: remove unused m_subaddresses_inv

src/wallet/wallet2.cpp

@@ -895,7 +895,6 @@ void wallet2::expand_subaddresses(const cryptonote::subaddress_index& index)
       {
          const crypto::public_key &D = pkeys[index2.minor];
          m_subaddresses[D] = index2;
-         m_subaddresses_inv[index2] = D;
       }
     }
     m_subaddress_labels.resize(index.major + 1, {"Untitled account"});
@@ -912,7 +911,6 @@ void wallet2::expand_subaddresses(const cryptonote::subaddress_index& index)
     {
        const crypto::public_key &D = pkeys[index2.minor - begin];
        m_subaddresses[D] = index2;
-       m_subaddresses_inv[index2] = D;
     }
     m_subaddress_labels[index.major].resize(index.minor + 1);
   }
@@ -2342,7 +2340,6 @@ bool wallet2::clear()
   m_address_book.clear();
   m_local_bc_height = 1;
   m_subaddresses.clear();
-  m_subaddresses_inv.clear();
   m_subaddress_labels.clear();
   return true;
 }
@@ -3184,7 +3181,6 @@ bool wallet2::finalize_multisig(const epee::wipeable_string &password, std::unor
   }
 
   m_subaddresses.clear();
-  m_subaddresses_inv.clear();
   m_subaddress_labels.clear();
   add_subaddress_account(tr("Primary account"));
 

src/wallet/wallet2.h

@@ -780,7 +780,8 @@ namespace tools
       if (ver < 20)
         return;
       a & m_subaddresses;
-      a & m_subaddresses_inv;
+      std::unordered_map<cryptonote::subaddress_index, crypto::public_key> dummy_subaddresses_inv;
+      a & dummy_subaddresses_inv;
       a & m_subaddress_labels;
       a & m_additional_tx_keys;
       if(ver < 21)
@@ -1087,7 +1088,6 @@ namespace tools
     std::unordered_map<crypto::public_key, size_t> m_pub_keys;
     cryptonote::account_public_address m_account_public_address;
     std::unordered_map<crypto::public_key, cryptonote::subaddress_index> m_subaddresses;
-    std::unordered_map<cryptonote::subaddress_index, crypto::public_key> m_subaddresses_inv;
     std::vector<std::vector<std::string>> m_subaddress_labels;
     std::unordered_map<crypto::hash, std::string> m_tx_notes;
     std::unordered_map<std::string, std::string> m_attributes;