Remove APP_SLUG, admin app does not use it
Remove APP_SLUG, admin app does not use it

alphagov/trade-tariff-admin,alphagov/trade-tariff-admin,alphagov/trade-tariff-admin,alphagov/trade-tariff-admin,bitzesty/trade-tariff-admin,bitzesty/trade-tariff-admin,bitzesty/trade-tariff-admin,bitzesty/trade-tariff-admin