revert: model properties

partially reverts de3c47dc69fa0c80f83004eab1f6bd455cb4ea9e

src/models/attachment.js

@@ -3,12 +3,6 @@ import UserModel from './user'
 import FileModel from './file'
 
 export default class AttachmentModel extends AbstractModel {
-	id = 0
-	taskId = 0
-	file = FileModel
-	createdBy = UserModel
-	created = null
-
 	constructor(data) {
 		super(data)
 		this.createdBy = new UserModel(this.createdBy)

src/models/subscription.js

@@ -2,12 +2,6 @@ import AbstractModel from '@/models/abstractModel'
 import UserModel from '@/models/user'
 
 export default class SubscriptionModel extends AbstractModel {
-	id = 0
-	entity = ''
-	entityId = 0
-	created = null
-	user = UserModel
-
 	constructor(data) {
 		super(data)
 		this.user = new UserModel(this.user)

src/models/task.js

@@ -10,13 +10,6 @@ import {parseDateOrNull} from '@/helpers/parseDateOrNull'
 const SUPPORTS_TRIGGERED_NOTIFICATION = 'Notification' in window && 'showTrigger' in Notification.prototype
 
 export default class TaskModel extends AbstractModel {
-	index = 0
-	done = false
-	priority = 0
-	percentDone = 0
-	
-	defaultColor = '198CFF'
-
 	constructor(data) {
 		super(data)