Fix vue warning on key (#127)

src/components/NodePreview.vue

@@ -55,11 +55,6 @@ const props = defineProps({
     type: Object as PropType<ComfyNodeDef>,
     required: true,
   },
-  // Make sure vue properly re-render the component when the nodeDef changes
-  key: {
-    type: String,
-    required: true,
-  },
 });
 
 const nodeDef = props.nodeDef as ComfyNodeDef;