remove trailing whitespace for lint errors

src/app/vault/add-edit.component.ts

@@ -43,7 +43,6 @@ export class AddEditComponent extends BaseAddEditComponent implements OnChanges
                     case 'windowHidden':
                         this.onWindowHidden();
                         break;
-                
                     default:
                 }
             });

src/app/vault/export.component.ts

@@ -35,7 +35,6 @@ export class ExportComponent extends BaseExportComponent implements OnInit {
                     case 'windowHidden':
                         this.onWindowHidden();
                         break;
-                
                     default:
                 }
             });

src/app/vault/view.component.ts

@@ -52,7 +52,6 @@ export class ViewComponent extends BaseViewComponent implements OnChanges {
                     case 'windowHidden':
                         this.onWindowHidden();
                         break;
-                
                     default:
                 }
             });