Created by: wozna

It removes the workaround from PR #17570

In MKL-DNN 0.18 there was no support for bounded ReLU post-op. Hence, when adding support for MobileNetV2 support we decided to use ReLU instead of ReLU6 (bounded relu). As the MKL-DNN version is upgraded to 0.20 now and it supports bounded ReLU post-op, the workaround can be removed and bounded ReLU can be used.

test=develop