MAGETWO-92279: An incorrect result of declaration:generate:whitelist execution

- simplifying code

Author: cpartica

app/code/Magento/Developer/Console/Command/TablesWhitelistGenerateCommand.php

@@ -197,9 +197,7 @@ private function filterPrimaryTables(array $moduleDbSchema)
         $primaryDbSchema = $this->getPrimaryDbSchema();
         if (isset($moduleDbSchema['table']) && isset($primaryDbSchema['table'])) {
             foreach ($primaryDbSchema['table'] as $tableNameKey => $tableContents) {
-                if (isset($moduleDbSchema['table'][$tableNameKey])) {
-                    unset($moduleDbSchema['table'][$tableNameKey]);
-                }
+                unset($moduleDbSchema['table'][$tableNameKey]);
             }
         }
         return $moduleDbSchema;

dev/tests/setup-integration/testsuite/Magento/Developer/Console/Command/TablesWhitelistGenerateCommandTest.php

@@ -67,9 +67,8 @@ public function setUp()
      */
     public function testExecute(array $expectedWhitelistContent)
     {
-        $this->cliCommand->install(['Magento_TestSetupDeclarationModule1']);
-
         $moduleName = 'Magento_TestSetupDeclarationModule1';
+        $this->cliCommand->install([$moduleName]);
         $modulePath = $this->componentRegistrar->getPath('module', $moduleName);
         $whiteListFileName = $modulePath
             . DIRECTORY_SEPARATOR