get rid of unittest

fixes #2916

Author: Vladimir Kotal

opengrok-tools/setup.py

@@ -1,6 +1,4 @@
 import os
-import unittest
-
 from setuptools import setup
 
 from src.main.python.opengrok_tools.version import __version__ as version
@@ -13,13 +11,6 @@ def readme():
         return readme.read()
 
 
-def my_test_suite():
-    test_loader = unittest.TestLoader()
-    test_suite = test_loader.discover(
-        os.path.join(SCRIPT_DIR, 'src', 'test', 'python'), pattern='test_*.py')
-    return test_suite
-
-
 setup(
     name='opengrok-tools',
     version=version,
@@ -39,7 +30,6 @@ def my_test_suite():
     author_email='[email protected]',
     description='Tools for managing OpenGrok instance',
     long_description=readme(),
-    test_suite='setup.my_test_suite',
     python_requires='>=3.4, <4',
     install_requires=[
         'jsonschema==2.6.0',