Bug 18226 - Remove "use Test::DBIx::Class" instantiations' dangerous code duplication

Bug 18226 - Remove "use Test::DBIx::Class" instantiations' dangerous code duplication

Is 'instantiations' even a word?

Use a Test::DBIx::Class defaults instead.

Save your keyboard and prevent horrible bugs from emerging from rampant code duplication.

This change doesn't seem to have any impact on the speed of executing those tests.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>