delegate determining the burn output and value to the operation; don't try to do it universally

blockstack/lib/nameset/virtualchain_hooks.py

@@ -166,8 +166,6 @@ def db_parse( block_id, txid, vtxindex, op, data, senders, inputs, outputs, fee,
        log.error("Skipping unrecognized opcode")
        return None
 
-   op_fee = get_burn_fee_from_outputs( outputs )
-
    log.debug("PARSE %s at (%s, %s): %s" % (opcode, block_id, vtxindex, data.encode('hex')))
 
    # get the data
@@ -180,10 +178,6 @@ def db_parse( block_id, txid, vtxindex, op, data, senders, inputs, outputs, fee,
 
    if op is not None:
 
-       # propagate fees
-       if op_fee is not None:
-          op['op_fee'] = op_fee
-
        # propagate tx data 
        op['vtxindex'] = int(vtxindex)
        op['txid'] = str(txid)