update test files

Author: rambasnet

A0/hello/tests/test_unit_hello.py

@@ -17,7 +17,3 @@ class TestHello(unittest.TestCase):
     def test1_answer(self) -> None:
         """Test hello.py answer function"""
         self.assertEqual(answer(), 'Hello World!', "Test failed...")
-
-
-if __name__ == "__main__":
-    unittest.main(verbosity=2)

A1/cold/tests/test_cold.py

@@ -20,9 +20,3 @@ def test_answer() -> None:
     assert answer([12, -4, -56, -4544545, 64, 46464]) == 3
     assert answer([0, 453445, -1, -100, -45454, -44445]) == 4
     assert answer1('0 453445 -1 -100 -45454 -44445') == 4
-    print('all test casses passed...', file=sys.stderr)
-
-
-if __name__ == "__main__":
-    # Don't need to call test_answer() if we use pytest
-    test_answer()