OZG-6177 clean up

...ransfer/user/OzgCloudElsterTransferConfigMapUserList.java

...lstertransfer/user/OzgCloudElsterTransferUserService.java

...d/operator/elstertransfer/user/ConfigMapUserListTest.java

...transfer/user/OzgCloudElsterTransferConfigMapFactory.java

.../user/OzgCloudElsterTransferConfigMapUserListFactory.java

...fer/user/OzgCloudElsterTransferConfigMapUserListTest.java

...rtransfer/user/OzgCloudElsterTransferUserServiceTest.java