Remove Python 2 cStringIO imports

linkcheck/checker/ftpurl.py

@@ -18,11 +18,7 @@ Handle FTP links.
 """
 
 import ftplib
-try:
-    from cStringIO import StringIO
-except ImportError:
-    # Python 3
-    from io import StringIO
+from io import StringIO
 
 from .. import log, LOG_CHECK, LinkCheckerError, mimeutil
 from . import proxysupport, httpurl, internpaturl, get_index_html

linkcheck/log.py

@@ -17,15 +17,11 @@
 Logging and debug functions.
 """
 
+from io import StringIO
 import logging
 import os
 import inspect
 import traceback
-try:
-    from cStringIO import StringIO
-except ImportError:
-    # Python 3
-    from io import StringIO
 
 # memory leak debugging
 #import gc

linkcheck/logger/csvlog.py

@@ -17,11 +17,9 @@
 A CSV logger.
 """
 import csv
+from io import StringIO
 import os
-try:
-    from cStringIO import StringIO
-except ImportError: # Python 3
-    from io import StringIO
+
 from . import _Logger
 from .. import strformat
 

tests/test_decorators.py

@@ -17,14 +17,9 @@
 Test decorators.
 """
 
-import unittest
+from io import StringIO
 import time
-
-try:
-    from cStringIO import StringIO
-except ImportError:
-    # Python 3
-    from io import StringIO
+import unittest
 
 import linkcheck.decorators