fix error in all libraries

src/app/app.ts

@@ -2,13 +2,12 @@ import { Component } from '@angular/core';
 import {RouterLink, RouterLinkActive, RouterOutlet} from '@angular/router';
 import { NzLayoutModule } from 'ng-zorro-antd/layout';
 import { NzMenuModule } from 'ng-zorro-antd/menu';
-import {NzFlexDirective} from "ng-zorro-antd/flex";
 import {NzIconDirective} from "ng-zorro-antd/icon";
 import {ModalNav} from "./components/modalNav/modalNav";
 
 @Component({
   selector: 'app-root',
-    imports: [RouterOutlet, NzLayoutModule, NzMenuModule, NzFlexDirective, NzIconDirective, RouterLinkActive, RouterLink, ModalNav],
+    imports: [RouterOutlet, NzLayoutModule, NzMenuModule, NzIconDirective, RouterLinkActive, RouterLink, ModalNav],
   templateUrl: './app.html',
   styleUrl: './app.css'
 })