remove unecessary [@bs.string]

Author: MoOx

src/ReactNativeImagePicker.re

@@ -46,16 +46,16 @@ module ImagePicker = {
         ~chooseFromLibraryButtonTitle: string=?,
         ~chooseWhichLibraryTitle: string=?,
         ~tintColor: string=?,
-        ~cameraType: [@bs.string] [ | `front | `back]=?,
-        ~mediaType: [@bs.string] [ | `photo | `video | `mixed]=?,
+        ~cameraType: [ | `front | `back]=?,
+        ~mediaType: [ | `photo | `video | `mixed]=?,
         ~maxWidth: float=?,
         ~maxHeight: float=?,
         ~quality: float=?,
         ~durationLimit: int=?,
         ~rotation: float=?,
         ~allowsEditing: bool=?,
         ~noData: bool=?,
-        ~videoQuality: [@bs.string] [ | `low | `medium | `high]=?,
+        ~videoQuality: [ | `low | `medium | `high]=?,
         ~storageOptions: Storage.t=?,
         ~permissionDenied: PermissionDenied.t=?,
         ~customButtons: array(Button.t)=?,