message: test: Remove unused unnamed parameter from block.serialize call
  All blocks and transactions are serialized with witness, no need to set
  this
diff: @@ -1218,7 +1218,7 @@ class TaprootTest(BitcoinTestFramework):
  witness and add_witness_commitment(block)
  block.rehash()
  block.solve()
  - block_response = node.submitblock(block.serialize(True).hex())
  + block_response = node.submitblock(block.serialize().hex())
  if err_msg is not None:
  assert block_response is not None and err_msg in block_response, "Missing error message '%s' from block response '%s': %s" % (err_msg, "(None)" if block_response is None else block_response, msg)
  if (accept):
  