CRM-7855: Failed tests on master related to Opportunity feature (#8048)

- fix failed tests

Author: Aleksey Solonenko

src/Oro/Bundle/SalesBundle/Tests/Functional/Fixture/LoadOpportunityByStatusWidgetFixture.php

@@ -30,8 +30,6 @@ protected function createOpportunities()
         //insert one opportunity for previous months
         $createdAt = new \DateTime('now', new \DateTimeZone('UTC'));
         $this->createOpportunity($createdAt, ++$i);
-        $createdAt->sub(new \DateInterval('P2M'));
-        $this->createOpportunity($createdAt, ++$i);
     }
 
     public function createOpportunity($createdAt, $id)

src/Oro/Bundle/SalesBundle/Tests/Functional/Widget/OpportunityByStatusTest.php

@@ -106,7 +106,7 @@ public function widgetProvider()
                         'opportunities_by_state[dateRange][type]'   => AbstractDateFilterType::TYPE_ALL_TIME,
                         'opportunities_by_state[useQuantityAsData]' => 1
                     ],
-                    'expectedResultCount' => 5
+                    'expectedResultCount' => 4
                 ],
             ],
         ];