Autotest: Fix incorrect tearDowns for unittests.

The tearDowns now correctly call the superclass' tearDown functions in
passing_experimental_unittests.py. Before they were calling the super class'
setUp.

BUG=None
TEST=Ran unittests again.

Change-Id: I3d8d2b18ca025678ddc7fb87391f9dc4c111891e
Reviewed-on: https://gerrit.chromium.org/gerrit/64717
Reviewed-by: Dennis Jeffrey <dennisjeffrey@chromium.org>
Commit-Queue: Keyar Hood <keyar@chromium.org>
Tested-by: Keyar Hood <keyar@chromium.org>
diff --git a/frontend/health/passing_experimental_unittests.py b/frontend/health/passing_experimental_unittests.py
index 04b0d77..fe1aa15 100755
--- a/frontend/health/passing_experimental_unittests.py
+++ b/frontend/health/passing_experimental_unittests.py
@@ -35,7 +35,7 @@
 
     def tearDown(self):
         setup_test_environment.tear_down()
-        super(GetExperimentalTestsTests, self).setUp()
+        super(GetExperimentalTestsTests, self).tearDown()
 
 
     def test_returns_tests_marked_experimental(self):
@@ -75,7 +75,7 @@
         passing_experimental._MAX_DAYS_SINCE_LAST_PASS = self._orig_since_pass
         passing_experimental._MIN_DAYS_SINCE_FAILURE = self._orig_since_failure
         datetime.datetime = self._datetime
-        super(FindLongPassingTestsTests, self).setUp()
+        super(FindLongPassingTestsTests, self).tearDown()
 
 
     def test_do_not_return_tests_that_have_failed_recently(self):