Removed Stateful PingPong example

Author: coot

typed-protocols-examples/src/Network/TypedProtocol/Stateful/PingPong/Client.hs

@@ -38,7 +38,6 @@ library
                    , Network.TypedProtocol.ReqResp2.Type
                    , Network.TypedProtocol.ReqResp2.Client
 
-                   , Network.TypedProtocol.Stateful.PingPong.Client
                    , Network.TypedProtocol.Stateful.ReqResp.Client
                    , Network.TypedProtocol.Stateful.ReqResp.Examples