README.md: SDM is no longer needed

README.md

@@ -11,11 +11,6 @@ Currently two different installation scenarios are supported:
   application servers, MariaDB database servers and Redis servers.
   Automatic failover for MaraiDB and Redis is not yet supported.
 
-Requirements
-------------
-
-This role requires the [SDM framework](https://sdm.mn.tu-dresden.de/).
-
 Role Variables
 --------------