fix: async test

Author: GODrums

projects/ngx-angular-query-builder/src/lib/query-builder/query-builder.component.spec.ts

@@ -1,4 +1,4 @@
-import { async, ComponentFixture, TestBed } from "@angular/core/testing";
+import { waitForAsync, ComponentFixture, TestBed } from "@angular/core/testing";
 import { CommonModule } from "@angular/common";
 import { FormsModule } from "@angular/forms";
 import { QueryBuilderComponent } from "./query-builder.component";
@@ -7,7 +7,7 @@ describe("QueryBuilderComponent", () => {
   let component: QueryBuilderComponent;
   let fixture: ComponentFixture<QueryBuilderComponent>;
 
-  beforeEach(async(() => {
+  beforeEach(waitForAsync(() => {
     TestBed.configureTestingModule({
       imports: [CommonModule, FormsModule],
       declarations: [QueryBuilderComponent]

projects/ngx-angular-query-builder/src/lib/query-builder/query-builder.component.ts

@@ -42,7 +42,6 @@ import {
   forwardRef,
   Input,
   OnChanges,
-  OnInit,
   QueryList,
   SimpleChanges,
   TemplateRef,

projects/ngx-angular-query-builder/src/lib/query-builder/query-builder.interfaces.ts

@@ -1,5 +1,3 @@
-import { ValidationErrors } from "@angular/forms";
-
 export interface RuleSet {
   condition: string;
   rules: Array<RuleSet | Rule | any>;