[general] Refactoring

* remove (hopefully) unnecessary import statements
* make some code a bit more compact
* remove dead code ... again: hopefully so

bumblebee/config.py

@@ -54,7 +54,6 @@ class ModuleConfig(object):
 
 class Config(object):
     def __init__(self, args):
-        self._raw = args
         self._parser = self._parser()
         self._store = {}