Remove unnecessary setUp function in testcase

In testcase, setUp will be called automatically. This patch used to
remove setUp functions that do nothing. Besides, it will keep code clean.

Change-Id: I6689b9b22d521ddf3556329d8103ea34e26a90ea

stackalytics/tests/unit/test_config_files.py

@@ -51,8 +51,6 @@ def dict_raise_on_duplicates(ordered_pairs):
 
 
 class TestConfigFiles(testtools.TestCase):
-    def setUp(self):
-        super(TestConfigFiles, self).setUp()
 
     def _read_raw_file(self, file_name):
         if six.PY3:

stackalytics/tests/unit/test_driverlog.py

@@ -67,8 +67,6 @@ DRIVER_NON_EXISTENT = {
 
 
 class TestDriverlog(testtools.TestCase):
-    def setUp(self):
-        super(TestDriverlog, self).setUp()
 
     def test_find_ci_result_success(self):
         drivers = [DRIVER]

stackalytics/tests/unit/test_mls.py

@@ -41,8 +41,6 @@ test works :)
 
 
 class TestMls(testtools.TestCase):
-    def setUp(self):
-        super(TestMls, self).setUp()
 
     def test_mail_parse_regex(self):
 

stackalytics/tests/unit/test_mps.py

@@ -21,8 +21,6 @@ from stackalytics.processor import mps
 
 
 class TestMps(testtools.TestCase):
-    def setUp(self):
-        super(TestMps, self).setUp()
 
     def test_member_parse_regex(self):
 

stackalytics/tests/unit/test_user_processor.py

@@ -19,8 +19,6 @@ from stackalytics.processor import user_processor
 
 
 class TestUserProcessor(testtools.TestCase):
-    def setUp(self):
-        super(TestUserProcessor, self).setUp()
 
     def test_update_user(self):
         user = {

stackalytics/tests/unit/test_utils.py

@@ -20,8 +20,6 @@ from stackalytics.processor import utils
 
 
 class TestUtils(testtools.TestCase):
-    def setUp(self):
-        super(TestUtils, self).setUp()
 
     def _test_one_range(self, start, end, step):
         elements = set()

stackalytics/tests/unit/test_web_utils.py

@@ -21,8 +21,6 @@ from stackalytics.dashboard import parameters
 
 
 class TestWebUtils(testtools.TestCase):
-    def setUp(self):
-        super(TestWebUtils, self).setUp()
 
     def test_make_commit_message(self):
         message = '''