Remove OTA update functionality

ui/src/components/layout/MainLayout.tsx

@@ -18,7 +18,6 @@ import { MultiRunLauncher } from '@/components/multirun';
 import { DrawerProvider } from '@/contexts/DrawerContext';
 
 import { useUIStore } from '@/stores/useUIStore';
-import { useUpdateStore } from '@/stores/useUpdateStore';
 import { useDeviceInfo } from '@/lib/device';
 import { useEffectiveDirectory } from '@/hooks/useEffectiveDirectory';
 import { cn } from '@/lib/utils';
@@ -144,26 +143,6 @@ export const MainLayout: React.FC = () => {
         }
     }, [isRightSidebarOpen, isMobile]);
 
-    // Trigger initial update check shortly after mount, then every hour.
-    const checkForUpdates = useUpdateStore((state) => state.checkForUpdates);
-    React.useEffect(() => {
-        const initialDelayMs = 3000;
-        const periodicIntervalMs = 60 * 60 * 1000;
-
-        const timer = window.setTimeout(() => {
-            checkForUpdates();
-        }, initialDelayMs);
-
-        const interval = window.setInterval(() => {
-            checkForUpdates();
-        }, periodicIntervalMs);
-
-        return () => {
-            window.clearTimeout(timer);
-            window.clearInterval(interval);
-        };
-    }, [checkForUpdates]);
-
     React.useEffect(() => {
         const previous = useUIStore.getState().isMobile;
         if (previous !== isMobile) {