chore: remove unused var

src/datetime-picker/DatePicker.js

@@ -1,4 +1,4 @@
-import { createNamespace, get } from '../utils';
+import { createNamespace } from '../utils';
 import { isDate } from '../utils/validate/date';
 import { padZero } from '../utils/format/string';
 import { getTrueValue, getMonthEndDay } from './utils';

src/mixins/relation.js

@@ -1,4 +1,3 @@
-import Vue from 'vue';
 import { sortChildren } from '../utils/vnodes';
 
 export function ChildrenMixin(parent, options = {}) {

src/number-keyboard/index.js

@@ -3,7 +3,7 @@ import { stopPropagation } from '../utils/dom/event';
 import { BindEventMixin } from '../mixins/bind-event';
 import Key from './Key';
 
-const [createComponent, bem, t] = createNamespace('number-keyboard');
+const [createComponent, bem] = createNamespace('number-keyboard');
 
 export default createComponent({
   mixins: [

src/number-keyboard/test/index.spec.js

@@ -1,5 +1,5 @@
 import NumberKeyboard from '..';
-import { mount, trigger, later } from '../../../test';
+import { mount, trigger } from '../../../test';
 
 function clickKey(key) {
   trigger(key, 'touchstart');