MAGETWO-63851: Re-implement cancel guarantee mechanism

- Removed some guarantee cancel checks

Author: Dmytro Yushkin

Model/Guarantee/CancelingServiceTest.php

@@ -65,31 +65,6 @@ protected function setUp()
         ]);
     }
 
-    /**
-     * Checks a test case, when Signifyd guarantee was declined.
-     *
-     * @covers \Magento\Signifyd\Model\Guarantee\CancelingService::cancelForOrder
-     * @magentoDataFixture Magento/Signifyd/_files/case.php
-     * @magentoConfigFixture current_store fraud_protection/signifyd/active 1
-     */
-    public function testCancelForOrderWithDeclinedGuarantee()
-    {
-        /** @var CaseRepositoryInterface $caseRepository */
-        $caseRepository = $this->objectManager->get(CaseRepositoryInterface::class);
-        $caseEntity = $caseRepository->getByCaseId(self::$caseId);
-        $caseEntity->setGuaranteeDisposition(CaseInterface::GUARANTEE_DECLINED);
-        $caseRepository->save($caseEntity);
-
-        $this->gateway->expects(self::never())
-            ->method('cancelGuarantee');
-
-        $this->logger->expects(self::never())
-            ->method('error');
-
-        $result = $this->service->cancelForOrder($caseEntity->getOrderId());
-        self::assertFalse($result);
-    }
-
     /**
      * Checks a test case, when Signifyd gateway throws an exception.
      *