remove some of the code smells.

Author: dnozay

xmlrunner/builder.py

@@ -2,7 +2,6 @@
 import sys
 import time
 import six
-from six import unichr
 
 from xml.dom.minidom import Document
 
@@ -21,8 +20,8 @@
 
 if sys.maxunicode > 0x10000:
     _char_tail = six.u('%s-%s') % (
-        unichr(0x10000),
-        unichr(min(sys.maxunicode, 0x10FFFF))
+        six.unichr(0x10000),
+        six.unichr(min(sys.maxunicode, 0x10FFFF))
     )
 
 _nontext_sub = re.compile(

xmlrunner/result.py

@@ -6,7 +6,6 @@
 import six
 import re
 from os import path
-from six import unichr
 from six.moves import StringIO
 
 from .unittest import TestResult, _TextTestResult, failfast
@@ -34,7 +33,7 @@
     ]) 
 
 _illegal_ranges = [
-    "%s-%s" % (unichr(low), unichr(high))
+    "%s-%s" % (six.unichr(low), six.unichr(high))
     for (low, high) in _illegal_unichrs
 ]