Remove unused imp_suffixes. Fixes #135.

Author: grisha

lib/python/mod_python/publisher.py

@@ -34,7 +34,6 @@
 import sys
 import os
 from os.path import exists, isabs, normpath, split, isfile, join, dirname
-import importlib.machinery
 import re
 import base64
 
@@ -43,8 +42,6 @@
 import collections
 
 
-imp_suffixes = " ".join(x[1:] for x in importlib.machinery.all_suffixes())
-
 # Python 2/3 compat workaround
 PY2 = sys.version[0] == '2'
 def _callable(obj):