Remove duplicated card number interface

[yongjoon-km]

Feature Description

The CardNumber interface has a duplicated method with the same functionality.

Possible Implementation

Remove one of the duplicated interfaces.

Have you spent some time checking if this feature request has been raised before?

• [X] I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• [X] I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!