Remove instructions for P1 Fraud

[cprice-ping]

Describe the bug
Docs still describe P1 Fraud integration. That service no longer exists.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://github.com/pingidentity/pf-authn-js-widget/blob/master/docs/pingonefraudIntegration.md
2. Delete this page
3. Delete the references to this page

Expected behavior
No references to P1 Fraud