Remove non-phone number elements

[shoheitanaka]

All Submissions:

• Does your code follow the Extendables standards?
• Have you written new tests for your changes, as applicable?
• Have you successfully run tests with your changes locally?

Changes proposed in this Pull Request:

When I tested it in the sandbox, the phone number contained invisible data and I couldn't make a payment with WooCommerce validation, so I would like this process.

Closes # .

How to test the changes in this Pull Request:

1. My staging site do it, payment complete.

Other information:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?