How do I clear this message..?

Hey there JD0625,

If you're referring to the message indicated in the related article above your post, there's not any steps to take to clear it. If you haven't yet, we recommend reading through the entire article. Here's the link again just in case: About genuine iPhone displays - Apple Support

To sum it up, this message usually shows when service was incomplete for a display, or a few other reasons listed under the section 'Parts and service history'. The link also mentions that this may update once Apple has updated the device information for this iPhone.

If you recently serviced your iPhone, we recommend reaching back out to the service provider to review this article and the service performed with you. Keep in mind that it's also noted in the same link that this will not affect your ability to use your iPhone.

Take care.