Bugfix in instance default config

install/conf.d/lodel2.ini

@@ -2,7 +2,7 @@
 debug = False
 sitename = noname
 plugins_path = /foo/plugins
-plugins = dummy, webui, datasources, dummy_datasource
+plugins = dummy, webui, dummy_datasource
 
 [lodel2.logging.stderr]
 level = DEBUG