test(radio): remove initial value

Author: brandyscarney

core/src/components/radio-group/test/basic/index.html

@@ -24,7 +24,7 @@
 
       <ion-content>
         <ion-list>
-          <ion-radio-group name="items" id="group" value="1">
+          <ion-radio-group name="items" id="group">
             <ion-list-header>
               <ion-label>Radio Group Header</ion-label>
             </ion-list-header>