Revert "fix bug in test - new AbbyyOcr"

This reverts commit fabc10b575941e089d9948adcfce5a25952c8bea.
Revert "split into two classes - AbbyyOcr and ocrsdk"

This reverts commit bf192f5714f3d1abc898f3a7d5f36508e7f3714d.
Add test assertion for ABBYY credentials