remove v7 tests, keep v5 and v6 compatibility

Author: igorls

projects/demo/src/app/app.component.html

@@ -3,13 +3,6 @@ <h1>Font Awesome examples</h1>
 <h3>Icon as Object (with title attribute—inspect the DOM to see it)</h3>
 <fa-icon [icon]="faCoffee" title="Coffee: Best Drink Ever"></fa-icon>
 
-<h3>New v7 Icons</h3>
-<div style="display: flex; flex-direction: row; gap: 10px">
-  <fa-icon [icon]="faSpiral" [title]="'Spiral'"></fa-icon>
-  <fa-icon [icon]="faBusSide"></fa-icon>
-  <fa-icon [icon]="faSeptagon"></fa-icon>
-</div>
-
 <h3>Icon looked up in library by name</h3>
 <p>
   Possible after adding the <code>faUser</code> icon from the <code>free-solid-svg-icons</code> package to the library.

projects/demo/src/app/app.component.ts

@@ -11,16 +11,13 @@ import {
   faCog,
   faEllipsisH,
   faFighterJet,
-  faFlag as solidFlag,
   faHeart,
   faMagic,
   faSpinner,
   faSquare,
   faTimes,
   faUser,
-  faBusSide,
-  faSpiral,
-  faSeptagon,
+  faFlag as solidFlag,
 } from '@fortawesome/free-solid-svg-icons';
 import { AlternatePrefixComponent } from './alternate-prefix.component';
 
@@ -48,11 +45,6 @@ export class AppComponent {
   faHeart = faHeart;
   faSpinner = faSpinner;
 
-  // V7 Icons
-  faBusSide = faBusSide;
-  faSpiral = faSpiral;
-  faSeptagon = faSeptagon;
-
   faDummy: IconDefinition = {
     prefix: 'fad',
     iconName: 'dummy',