Remove every old-style class.

src/plugins/plugin_misc_text_commands.py

@@ -33,7 +33,7 @@ PLUGIN_INFO = {
 "description": _("""IRC like text commands""")
 }
 
-class TextCommands():
+class TextCommands(object):
     #FIXME: doc strings for commands have to be translatable
     #       plugins need a dynamic translation system (translation
     #       should be downloadable independently)