Useless method overriding issue fix

Author: subash-natarajan

dev/tests/integration/testsuite/Magento/Customer/Controller/Adminhtml/GroupTest.php

@@ -39,15 +39,6 @@ public function setUp()
         $this->groupRepository = $objectManager->get(\Magento\Customer\Api\GroupRepositoryInterface::class);
     }
 
-    /**
-     * @inheritDoc
-     */
-    public function tearDown()
-    {
-        parent::tearDown();
-        //$this->session->unsCustomerGroupData();
-    }
-
     /**
      * Test new group form.
      */