Feature: Remove test_suite and tests_require from setup.

Executing the tests is handled by the Makefile.

setup.py

@@ -55,9 +55,5 @@ setup(
     author_email = 'pavel.kacha@cesnet.cz',
     license = 'ISC',
     py_modules = ['typedcols'],
-    test_suite = 'nose.collector',
-    tests_require = [
-        'nose'
-    ],
     zip_safe = True
 )