Remove deprecated usage of SafeConfigParser in python3

versioneer.py

@@ -278,9 +278,10 @@ https://creativecommons.org/publicdomain/zero/1.0/ .
 
 from __future__ import print_function
 try:
-    import configparser
+    from configparser import ConfigParser
 except ImportError:
-    import ConfigParser as configparser
+    from ConfigParser import SafeConfigParser as ConfigParser
+    ConfigParser.read_file = ConfigParser.readfp
 import errno
 import json
 import os
@@ -339,9 +340,9 @@ def get_config_from_root(root):
     # configparser.NoOptionError (if it lacks "VCS="). See the docstring at
     # the top of versioneer.py for instructions on writing your setup.cfg .
     setup_cfg = os.path.join(root, "setup.cfg")
-    parser = configparser.SafeConfigParser()
+    parser = ConfigParser()
     with open(setup_cfg, "r") as f:
-        parser.readfp(f)
+        parser.read_file(f)
     VCS = parser.get("versioneer", "VCS")  # mandatory
 
     def get(parser, name):