Remove unused lightbox options (#1616)

* Inline lightbox helpers

* Delete unused useImagePrefetch

* Delete unused long press gesture

* Always enable double tap

* Always enable swipe to close

* Remove unused onImageIndexChange

* Inline custom Hooks into ImageViewing

* Declare LightboxFooter outside Lightbox

* Add more TODO comments

* Inline useDoubleTapToZoom

* Remove dead utils, move utils used only once

src/view/com/lightbox/ImageViewing/components/ImageItem/ImageItem.tsx

@@ -8,10 +8,6 @@ type Props = {
   imageSrc: ImageSource
   onRequestClose: () => void
   onZoom: (scaled: boolean) => void
-  onLongPress: (image: ImageSource) => void
-  delayLongPress: number
-  swipeToCloseEnabled?: boolean
-  doubleTapToZoomEnabled?: boolean
 }
 
 const ImageItem = (_props: Props) => {