Fix failed unit test

Author: Burlacu Vasilii

app/code/Magento/Catalog/Test/Unit/Block/Product/ListProductTest.php

@@ -187,10 +187,6 @@ public function testGetIdentities()
             ->method('getProductCollection')
             ->will($this->returnValue($this->prodCollectionMock));
 
-        $this->layoutMock->expects($this->once())
-            ->method('getBlock')
-            ->will($this->returnValue($this->toolbarMock));
-
         $this->assertEquals(
             [$categoryTag, $productTag],
             $this->block->getIdentities()