Remove kerberos session renewal because gokrb5 now performs renewals by default
diff --git a/http_client.go b/http_client.go
index 6aa75bf..ca4afbb 100644
--- a/http_client.go
+++ b/http_client.go
@@ -119,14 +119,6 @@
 				return nil, fmt.Errorf("error performing kerberos login with keytab: %s", err)
 			}
 
-			session, err := kc.GetSessionFromRealm(authenticationConf.principal.realm)
-
-			if err != nil {
-				return nil, fmt.Errorf("error getting session from realm name: %s", err)
-			}
-
-			kc.EnableAutoSessionRenewal(session)
-
 			c.kerberosClient = kc
 		}
 	}