chore(radio-group): Remove @internal according to latest guidelines

dkamburov · dkamburov · commit be647718ee83 · 2020-02-18T15:29:11.000+02:00
diff --git a/projects/igniteui-angular/src/lib/directives/radio/radio-group.directive.ts b/projects/igniteui-angular/src/lib/directives/radio/radio-group.directive.ts
@@ -414,7 +414,6 @@ export class IgxRadioGroupDirective implements AfterContentInit, ControlValueAcc
 
 /**
  * @hidden
- * @internal
  */
 @NgModule({
     declarations: [IgxRadioGroupDirective, IgxRadioComponent],
