fix: Fix react tracing example

Author: mydea

platform-includes/performance/configure-sample-rate/javascript.react.mdx

@@ -14,13 +14,6 @@ Sentry.init({
     // Or, if you are using react router, use the appropriate integration
     // See docs for support for different versions of react router
     // https://docs.sentry.io/platforms/javascript/guides/react/configuration/integrations/react-router/
-    Sentry.reactRouterV6BrowserTracingIntegration({
-      useEffect: React.useEffect,
-      useLocation,
-      useNavigationType,
-      createRoutesFromChildren,
-      matchRoutes,
-    }),
   ],
 
   // For finer control of sent transactions you can adjust this value, or