chore: remove unsued import

Author: jstarpl

packages/job-worker/src/playout/model/implementation/__tests__/PlayoutModelImpl.spec.ts

@@ -7,7 +7,6 @@ import {
 	RundownPlaylistId,
 } from '@sofie-automation/corelib/dist/dataModel/Ids'
 import { DBPart } from '@sofie-automation/corelib/dist/dataModel/Part'
-import { DBPartInstance } from '@sofie-automation/corelib/dist/dataModel/PartInstance'
 import {
 	PeripheralDevice,
 	PeripheralDeviceCategory,