chore(angular): remove radio value accessor (#28386)

Co-authored-by: Liam DeBeasi <liamdebeasi@users.noreply.github.com>

packages/angular/src/directives/control-value-accessors/index.ts

@@ -1,5 +1,4 @@
 export * from './boolean-value-accessor';
 export * from './numeric-value-accessor';
-export * from './radio-value-accessor';
 export * from './select-value-accessor';
 export * from './text-value-accessor';

packages/angular/src/directives/control-value-accessors/radio-value-accessor.ts

@@ -1,29 +0,0 @@
-import { ElementRef, Injector, Directive, HostListener } from '@angular/core';
-import { NG_VALUE_ACCESSOR } from '@angular/forms';
-import { ValueAccessor } from '@ionic/angular/common';
-
-@Directive({
-  /* tslint:disable-next-line:directive-selector */
-  selector: 'ion-radio',
-  providers: [
-    {
-      provide: NG_VALUE_ACCESSOR,
-      useExisting: RadioValueAccessorDirective,
-      multi: true,
-    },
-  ],
-})
-export class RadioValueAccessorDirective extends ValueAccessor {
-  constructor(injector: Injector, el: ElementRef) {
-    super(injector, el);
-  }
-
-  @HostListener('ionSelect', ['$event.target'])
-  _handleIonSelect(el: any): void {
-    /**
-     * The `el` type is any to access the `checked` state property
-     * that is not exposed on the type interface.
-     */
-    this.handleValueChange(el, el.checked);
-  }
-}