setup.py: simplify, use setuptools sdist command

setup.py

@@ -1,38 +1,17 @@
 #!/usr/bin/python
 from setuptools import setup
-from distutils.cmd import Command
-from unittest import TextTestRunner, TestLoader
-import os
-
-class TestCommand(Command):
-    user_options = [ ]
-
-    def initialize_options(self):
-        self._dir = os.getcwd()
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        '''
-        Finds all the tests modules in tests/, and runs them.
-        '''
-        tests = TestLoader().loadTestsFromName('tests.api')
-        t = TextTestRunner(verbosity = 1)
-        t.run(tests)
 
 setup(name='rfc3161',
-        version='1.0.6',
-        license='MIT',
-        url='https://dev.entrouvert.org/projects/python-rfc3161',
-        description='Python implementation of the RFC3161 specification, using pyasn1',
-        long_description=file('README').read(),
-        author='Benjamin Dauvergne',
-        author_email='bdauvergne@entrouvert.com',
-        packages=['rfc3161'],
-        install_requires=[
-            'pyasn1', 
-            'pyasn1_modules', 
-            'requests',
-            'M2Crypto'],
-        cmdclass={'test': TestCommand})
+      version='1.0.6',
+      license='MIT',
+      url='https://dev.entrouvert.org/projects/python-rfc3161',
+      description='Python implementation of the RFC3161 specification, using pyasn1',
+      long_description=file('README').read(),
+      author='Benjamin Dauvergne',
+      author_email='bdauvergne@entrouvert.com',
+      packages=['rfc3161'],
+      install_requires=[
+          'pyasn1',
+          'pyasn1_modules',
+          'requests',
+          'M2Crypto'])