wallet2: clear all payments on soft rescan_bc

They'll get duplicated otherwise

src/wallet/wallet2.cpp

@@ -5324,6 +5324,10 @@ void wallet2::rescan_blockchain(bool hard, bool refresh)
     m_transfers.clear();
     m_key_images.clear();
     m_pub_keys.clear();
+    m_unconfirmed_txs.clear();
+    m_payments.clear();
+    m_confirmed_txs.clear();
+    m_unconfirmed_payments.clear();
     m_scanned_pool_txs[0].clear();
     m_scanned_pool_txs[1].clear();