Removed an unused dictionary

Recognizer.commands was unused, so there's no reason to keep it.

kayleevc/recognizer.py

@@ -21,7 +21,6 @@ class Recognizer(GObject.GObject):
 
     def __init__(self, config):
         GObject.GObject.__init__(self)
-        self.commands = {}
 
         src = config.options.microphone
         if src: