configparser is part of the interpreter in Python 3

[spackard]

This project specifies that configparser is required in setup.py:

minio-py/setup.py

Line 45 in 0ca673b

'configparser',

According to the Python 3 documentation (https://docs.python.org/3/library/configparser.html) and the configparser documentation (https://github.com/jaraco/configparser/blob/master/README.rst), configparser is part of the interpreter in Python 3, unless it is imported as from backports import configparser, which this project does not do. This requirement needs a Python interpreter specification on it, or it can simply be removed since Python 2 support has been removed in #973.