Update toc.yml

Author: guywi-ms

articles/azure-monitor/toc.yml

@@ -1256,8 +1256,6 @@ items:
           href: logs/resource-expression.md
         - name: Unify application data resources
           href: logs/unify-app-resource-data.md
-        - name: Cross service query between Azure Monitor and Azure Data Explorer overview
-          href: logs/azure-data-explorer-monitor-cross-service-query.md
         - name: Query Azure Data Explorer from Azure Monitor
           href: logs/azure-monitor-data-explorer-proxy.md
       - name: API