Issue #3173891 by shetpooja04, meena.bisht: Remove unused variable...

Issue #3173891 by shetpooja04, meena.bisht: Remove unused variable $assert_session in UpdateScriptTest.php, system module

core/modules/system/tests/src/Functional/UpdateSystem/UpdateScriptTest.php

@@ -414,7 +414,6 @@ public function testOrphanedSchemaEntries() {
 
     // Visit update.php and make sure we can click through to the 'No pending
     // updates' page without errors.
-    $assert_session = $this->assertSession();
     $this->drupalGet($this->updateUrl, ['external' => TRUE]);
     $this->updateRequirementsProblem();
     $this->clickLink(t('Continue'));