message: docs(Picker): remove value-key prop
diff: @@ -324,7 +324,6 @@ export default {
  | title | Toolbar title | _string_ | - |
  | confirm-button-text | Text of confirm button | _string_ | `Confirm` |
  | cancel-button-text | Text of cancel button | _string_ | `Cancel` |
  -| value-key | Key of option text | _string_ | `text` |
  | toolbar-position | Toolbar position, cat be set to `bottom` | _string_ | `top` |
  | loading | Whether to show loading prompt | _boolean_ | `false` |
  | show-toolbar | Whether to show toolbar | _boolean_ | `true` |
  