The previous patch 269da4bf was
actually for MDEV-8894 (not for MDEV-5377). It was erroneously
pushed with a wrong title.

This patch is a small cleanup for MDEV-8894.
CREATE TABLE is now not a part of binary logs recorded with MySQL,
only INSERT statements are. This will allow to reuse the same binary
logs in combinations with different CREATE TABLE statements,
to tests different data types.