Fix pylint errors

Fix the pylint errors. e.g. useless-object-inheritance, super-with-arguments,
unnecessary-comprehension, and no-else-return.

Bug: 195474743
Test: acloud-dev create
Change-Id: Ia778cc4d7a05678b099cdbd146c9e762fd68437e
diff --git a/setup/host_setup_runner_test.py b/setup/host_setup_runner_test.py
index 9ab1778..3123562 100644
--- a/setup/host_setup_runner_test.py
+++ b/setup/host_setup_runner_test.py
@@ -43,7 +43,7 @@
     # pylint: disable=invalid-name
     def setUp(self):
         """Set up the test."""
-        super(CuttlefishHostSetupTest, self).setUp()
+        super().setUp()
         self.CuttlefishHostSetup = CuttlefishHostSetup()
 
     def testShouldRunFalse(self):
@@ -86,7 +86,7 @@
     # pylint: disable=invalid-name
     def setUp(self):
         """Set up the test."""
-        super(AvdPkgInstallerTest, self).setUp()
+        super().setUp()
         self.AvdPkgInstaller = AvdPkgInstaller()
 
     def testShouldNotRun(self):
@@ -101,7 +101,7 @@
     # pylint: disable=invalid-name
     def setUp(self):
         """Set up the test."""
-        super(CuttlefishCommonPkgInstallerTest, self).setUp()
+        super().setUp()
         self.CuttlefishCommonPkgInstaller = CuttlefishCommonPkgInstaller()
 
     def testShouldRun(self):
@@ -128,7 +128,7 @@
     # pylint: disable=invalid-name
     def setUp(self):
         """Set up the test."""
-        super(MkcertPkgInstallerTest, self).setUp()
+        super().setUp()
         self.MkcertPkgInstaller = MkcertPkgInstaller()
 
     def testShouldRun(self):