WFST Normalization support for emails/electronic
This pull request **introduces 2 alerts** when merging 6383d773b8cef1cb0206d9cdadec9b0abe610cf4 into 98bdf7a16e27cf4157f0ec0fcf78e6b0d6373c02 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-f4cf5d868dae323cc31e029daacb46a2d10f1e31)

**new alerts:**

* 2 for Unused import