remove "msg" parameter from convert_tuples_by_name

When Who What
2019-09-03 18:52:18 Álvaro Herrera (alvherre) Closed in commitfest 2019-09 with status: Committed
2019-09-03 18:42:16 Álvaro Herrera (alvherre) Added alvherre as committer
2019-08-16 13:35:06 Peter Eisentraut (petere) New status: Ready for Committer
2019-08-16 13:35:03 Peter Eisentraut (petere) Added petere as reviewer
2019-08-14 18:10:00 Álvaro Herrera (alvherre) Changed authors to Álvaro Herrera (alvherre)
2019-08-14 18:09:48 Álvaro Herrera (alvherre) Attached mail thread 20190806224728.GA17233@alvherre.pgsql
2019-08-14 18:09:48 Álvaro Herrera (alvherre) Created patch record