Remove link to SCIMgateway

Author: phavekes

docs/index.md

@@ -22,9 +22,7 @@ or Selfservice Portal.
 ## Documentation
 
 - [API documentation](./api/)
-- SCIM
-  - [Protocol description](./SCIM/) -
-  - [Gateway Software](./scimgateway.md) - Dit is een voorbeeld: hierop is GEEN ondersteuning van SURF
+- SCIM Protocol description](./SCIM/)
 - [Archimate Model](./Archi/?view=id-942fd1b8aeda45388631ddde7877a745)
 - [Swagger](https://invite.test.surfconext.nl/ui/swagger-ui/index.html)
 - [Code](https://github.com/OpenConext/OpenConext-Invite/)