pgsql: Remove 'msg' parameter from convert_tuples_by_name

Remove 'msg' parameter from convert_tuples_by_name

The message was included as a parameter when this function was added in
dcb2bda9b704, but I don't think it has ever served any useful purpose.
Let's stop spreading it pointlessly.

Reviewed by Amit Langote and Peter Eisentraut.

Discussion: https://postgr.es/m/20190806224728.GA17233@alvherre.pgsql

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/fe66125974c58cc749ba441ff53e72216c819da0

Modified Files
--------------
src/backend/access/common/tupconvert.c | 17 +++++++----------
src/backend/catalog/partition.c | 3 +--
src/backend/commands/analyze.c | 3 +--
src/backend/commands/indexcmds.c | 3 +--
src/backend/commands/tablecmds.c | 24 ++++++++----------------
src/backend/executor/execExprInterp.c | 4 +---
src/backend/executor/execMain.c | 12 ++++--------
src/backend/executor/execPartition.c | 18 ++++++------------
src/backend/executor/nodeModifyTable.c | 3 +--
src/include/access/tupconvert.h | 9 +++------
10 files changed, 33 insertions(+), 63 deletions(-)