chore(cleanup): remove unused code

packages/angular/src/directives/ion-nav.ts

@@ -1,45 +0,0 @@
-import {
-  ComponentFactoryResolver,
-  Directive,
-  ElementRef,
-  Injector,
-  Type,
-} from '@angular/core';
-
-import { FrameworkDelegate } from '@ionic/core';
-
-import { AngularComponentMounter, AngularEscapeHatch } from '..';
-
-@Directive({
-  selector: 'ion-nav',
-})
-export class IonNav implements FrameworkDelegate {
-
-  constructor(
-    public elementRef: ElementRef,
-    protected angularComponentMounter: AngularComponentMounter,
-    protected cfr: ComponentFactoryResolver,
-    protected injector: Injector
-  ) {
-
-    this.elementRef.nativeElement.delegate = this;
-  }
-
-  attachViewToDom(elementOrContainerToMountTo: HTMLIonNavElement,
-    elementOrComponentToMount: Type<any>,
-    data?: any,
-    classesToAdd?: string[],
-    escapeHatch: AngularEscapeHatch = {}): Promise<any> {
-
-    // wrap whatever the user provides in an ion-page
-    const cfr = escapeHatch.cfr || this.cfr;
-    const injector = escapeHatch.injector || this.injector;
-    return this.angularComponentMounter.attachViewToDom(elementOrContainerToMountTo,
-      null, elementOrComponentToMount, cfr, injector, data, classesToAdd);
-  }
-
-  removeViewFromDom(parentElement: HTMLElement, childElement: HTMLElement) {
-    return this.angularComponentMounter.removeViewFromDom(parentElement, childElement);
-  }
-
-}