removed extra line

Author: lilyjma

articles/azure-functions/TOC.yml

@@ -940,7 +940,6 @@
             - name: Migrate version 4.x to 5.x
               href: migrate-service-bus-version-4-version-5.md
               displayName: Service Bus
-        - name: SignalR Service
         - name: SignalR Service
           items:
             - name: Overview