No "PRIMARY KEY" keyword is needed, when composing a parsed sql which
did not contain any primary key definition.

Change-Id: Ife8b898806edba41a52d47dc04b1170606ea8aae
Reviewed-on: https://gerrit.libreoffice.org/67379
Tested-by: Jenkins
Reviewed-by: Tamás Bunth <btomi96@gmail.com>