[PHPunit8] cleanup on tearDown functions

[eileenmcnaughton]

No description provided.

[civibot]

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[seamuslee001]

PHP Fatal error:  Declaration of CRM_Case_BAO_CaseTypeForkTest::setUp() must be compatible with CiviCaseTestCase::setUp(): void in /home/jenkins/bknix-dfl/build/core-19905-8tg90/web/sites/all/modules/civicrm/tests/phpunit/CRM/Case/BAO/CaseTypeForkTest.php on line 123

[eileenmcnaughton]

@seamuslee001 fixed -wanna add MOP?

[seamuslee001]

PHP Fatal error:  Declaration of Civi\CCase\SequenceListenerTest::setUp() must be compatible with CiviCaseTestCase::setUp(): void in /home/jenkins/bknix-dfl/build/core-19905-8ucdn/web/sites/all/modules/civicrm/tests/phpunit/Civi/CCase/SequenceListenerTest.php on line 10

@eileenmcnaughton