MAGETWO-79427: Delete CallExit function for After/Around plugin logic execution in FileFactory #11029

 - Merge Pull Request magento/magento2#11029 from osrecio/magento2:PR#DeleteExitFileFactory
 - Merged commits:
   1. 6ccd90e
   2. a6efe74

Author: miguelbalparda

lib/internal/Magento/Framework/App/Response/Http/FileFactory.php

@@ -99,19 +99,7 @@ public function create(
             if (!empty($content['rm'])) {
                 $dir->delete($file);
             }
-            $this->callExit();
         }
         return $this->_response;
     }
-
-    /**
-     * Call exit
-     *
-     * @return void
-     * @SuppressWarnings(PHPMD.ExitExpression)
-     */
-    protected function callExit()
-    {
-        exit(0);
-    }
 }

lib/internal/Magento/Framework/App/Test/Unit/Response/Http/FileFactoryTest.php

@@ -230,12 +230,12 @@ private function getModel()
     /**
      * Get model mock
      *
-     * @return \Magento\Framework\App\Response\Http\FileFactory | \PHPUnit\Framework_MockObject_MockBuilder
+     * @return \Magento\Framework\App\Response\Http\FileFactory | \PHPUnit_Framework_MockObject_MockObject
      */
     private function getModelMock()
     {
         $modelMock = $this->getMockBuilder(\Magento\Framework\App\Response\Http\FileFactory::class)
-            ->setMethods(['callExit'])
+            ->setMethods(null)
             ->setConstructorArgs(
                 [
                     'response' => $this->responseMock,