Remove badge that causes issue in PyPi

Author: noorul

README.rst

@@ -17,9 +17,6 @@ Python client for Spark Jobserver
         :target: https://pypi.python.org/pypi/python-sjsclient
         :alt: Latest version
 
-.. image:: https://img.shields.io/pypi/pyversions/python-sjsclient.svg
-        :target: https://pypi.python.org/pypi/python-sjsclient
-        :alt: Supported Python versions
 Features
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