rm obsolete TODO and clean imports

iobber/corpio.py

@@ -30,14 +30,13 @@ if 'Linux' in platform.system():
 	sys.setdlopenflags(dlflags | ctypes.RTLD_GLOBAL)
 
 import corpus2, wccl
-# TODO: get back to default dlopen policy?
 
 if 'Linux' in platform.system():
 	# get back to default dlopen policy
 	sys.setdlopenflags(dlflags)
 
 import config
-import codecs, os
+import os
 
 _ROOT = os.path.abspath(os.path.dirname(__file__))