removing unused requirement

# removing unused requirement

## do we use wsgiref?

how do we avoid using it for python >= 3.2?

where in smugline.py is wsgiref used?




## wsgiref-0.1.2.zip doesn't work with python3

>part of the build fails

it's wsgiref-0.1.2.zip's fault according to the travis output

	Downloading wsgiref-0.1.2.zip

	File "/home/travis/virtualenv/python3.3/build/wsgiref/setup.py", line 5, in <module>

	File "./ez_setup/__init__.py", line 170

	print "Setuptools version",version,"or greater has been installed."

searching for the code https://www.google.com/search?q=wsgiref+print+%22Setuptools+version%22%2Cversion%2C%22or+greater+has+been+installed.%22 return the code http://sourcecodebrowser.com/python-wsgiref/0.1.2/ez__setup_2____init_____8py_source.html that's python3 incompatible

according to https://pypi.python.org/pypi/wsgiref it's for python < 3.2

>This is a standalone release of the wsgiref library, that provides validation support for WSGI 1.0.1 (PEP 3333) for Python versions < 3.2