Remove use of krb4 settings in example krb5.conf.

krb5.conf

@@ -1,16 +1,6 @@
 [libdefaults]
-        default_realm = MY.REALM
+	default_realm = MY.REALM
 	clockskew = 300
-	v4_instance_resolve = false
-	v4_name_convert = {
-		host = {
-			rcmd = host
-			ftp = ftp
-		}
-		plain = {
-			something = something-else
-		}
-	}
 	
 [realms]
 	MY.REALM = {