MCLOUD-7504: Remove outdated ES images from Cloud Docker (#32)

Author: oshmyheliuk

images/elasticsearch/1.7/Dockerfile

@@ -7,10 +7,6 @@
 
 namespace Magento\CloudDocker\Test\Functional\Acceptance;
 
-use CliTester;
-use Codeception\Example;
-use Robo\Exception\TaskException;
-
 /**
  * @group php72
  */