UI: Remove an unsed import, EventV1beta1Api (#2116)

Signed-off-by: Yuki Iwai <[email protected]>

Author: tenzen-y

pkg/new-ui/v1beta1/frontend/src/app/pages/experiment-creation/nas-operations/operation/operation.component.ts

@@ -1,6 +1,5 @@
 import { Component, Input, Output, EventEmitter } from '@angular/core';
 import { FormGroup } from '@angular/forms';
-import { EventsV1beta1Api } from '@kubernetes/client-node';
 
 @Component({
   selector: 'app-nas-operation',