remove maintainers column from seeds
remove maintainers column from seeds

it got removed from cbv table, but was left in seeds.

dpnl87/supermarket,rafaelmagu/supermarket,tas50/supermarket,dpnl87/supermarket,chef/supermarket,robbkidd/supermarket,jzohrab/supermarket,leftathome/supermarket,rafaelmagu/supermarket,chef/supermarket,dpnl87/supermarket,rafaelmagu/supermarket,juliandunn/supermarket,leftathome/supermarket,nellshamrell/supermarket,jzohrab/supermarket,robbkidd/supermarket,jzohrab/supermarket,tas50/supermarket,robbkidd/supermarket,dpnl87/supermarket,chef/supermarket,juliandunn/supermarket,nellshamrell/supermarket,chef/supermarket,juliandunn/supermarket,robbkidd/supermarket,juliandunn/supermarket,leftathome/supermarket,nellshamrell/supermarket,nellshamrell/supermarket,chef/supermarket,leftathome/supermarket,jzohrab/supermarket,rafaelmagu/supermarket,tas50/supermarket,tas50/supermarket