caught an unused var

frontend/src/modules/dashboard/Dashboard.tsx

@@ -46,10 +46,10 @@ export const Dashboard: React.FC = () => {
     );
 
   const updateTime: Date = new Date(sysInfo.sysInfo.lastUpdated);
-  // const hoursSinceUpdate = Math.floor((new Date().getTime() - updateTime.getTime()) / 3600000);
+  const hoursSinceUpdate = Math.floor((new Date().getTime() - updateTime.getTime()) / 3600000);
 
   // manual toggles to test alert bar
-  const hoursSinceUpdate = 21;
+  // const hoursSinceUpdate = 21;
 
   // const lastRelease = sysInfo.sysInfo.lastRelease;