fixes regression in CheckboxGroup and RadioGroup fixture stories

Author: mperrotti

src/stories/CheckboxGroup/fixtures.stories.tsx

@@ -102,7 +102,6 @@ export const WithExternalLabel = ({
         {labelChildren} {parentArgs.required && '*'}
       </Box>
       <CheckboxGroup aria-labelledby="choiceHeading" {...parentArgs}>
-        {labelChildren && <CheckboxGroup.Label>{labelChildren}</CheckboxGroup.Label>}
         {captionChildren && <CheckboxGroup.Caption>{captionChildren}</CheckboxGroup.Caption>}
         <FormControl>
           <Checkbox />

src/stories/RadioGroup/fixtures.stories.tsx

@@ -102,7 +102,6 @@ export const WithExternalLabel = ({
         {labelChildren} {parentArgs.required && '*'}
       </Box>
       <RadioGroup aria-labelledby="choiceHeading" name="externalLabelRadioGroup" {...parentArgs}>
-        {labelChildren && <RadioGroup.Label>{labelChildren}</RadioGroup.Label>}
         {captionChildren && <RadioGroup.Caption>{captionChildren}</RadioGroup.Caption>}
         <FormControl>
           <Radio value="choiceOne" />