chore: remove test combobox (#20998)

Author: heloiselui

packages/react/src/components/ComboBox/ComboBox.stories.js

@@ -354,54 +354,3 @@ AutocompleteWithTypeahead.argTypes = {
   ...sharedArgTypes,
   onChange: { action: 'onChange' },
 };
-
-export const Test = (args) => {
-  const items = [
-    {
-      id: 'option-0',
-      text: 'An example option that is really long to show what should be done to handle long text',
-    },
-    {
-      id: 'option-1',
-      text: 'Option 1',
-    },
-    {
-      id: 'option-2',
-      text: 'Option 2',
-    },
-    {
-      id: 'option-3',
-      text: 'Option 3 - a disabled item',
-      disabled: true,
-    },
-    {
-      id: 'option-4',
-      text: 'Option 4',
-    },
-    {
-      id: 'option-5',
-      text: 'Option 5',
-    },
-  ];
-  return (
-    <div style={{ width: 300 }}>
-      <ComboBox
-        id="carbon-combobox"
-        items={items}
-        itemToString={(item) => (item ? item.text : '')}
-        titleText="ComboBox title"
-        helperText="Combobox helper text"
-        onChange={action('onChange')}
-        initialSelectedItem={{
-          id: 'option-1',
-          text: 'Option 1',
-        }}
-        selectedItem={{
-          id: 'option-1',
-          text: 'Option 1',
-        }}
-        {...args}
-      />
-    </div>
-  );
-};