fix(segmentation): Removed LOAD/hydrate button for segmentation overlays (#5214)

extensions/cornerstone-dicom-rt/src/viewports/OHIFCornerstoneRTViewport.tsx

@@ -41,7 +41,6 @@ function OHIFCornerstoneRTViewport(props: withAppTypes) {
   const [{ viewports, activeViewportId }, viewportGridService] = useViewportGrid();
 
   // States
-  const selectedSegmentObjectIndex: number = 0;
   const { setPositionPresentation } = usePositionPresentationStore();
   const [rtIsLoading, setRtIsLoading] = useState(!rtDisplaySet.isLoaded);
   const [processingProgress, setProcessingProgress] = useState({