Remove import functools from re module. The re module imports functools but never uses it.

Lib/re.py

@@ -121,7 +121,6 @@ This module also defines an exception 'error'.
 import sys
 import sre_compile
 import sre_parse
-import functools
 
 # public symbols
 __all__ = [ "match", "search", "sub", "subn", "split", "findall",