fix: remove MPTIssuanceID from tx (#2569)

fixes #2332 : Essentially, remove `mpt_issuance_id` for
`MPTokenIssuanceCreate`

src/feed/impl/TransactionFeed.cpp

@@ -209,7 +209,6 @@ TransactionFeed::pub(
 
         auto& txnPubobj = pubObj[txKey].as_object();
         rpc::insertDeliverMaxAlias(txnPubobj, version);
-        rpc::insertMPTIssuanceID(txnPubobj, meta);
 
         Json::Value nftJson;
         ripple::RPC::insertNFTSyntheticInJson(nftJson, tx, *meta);