I bought some custom art from an artist who uses a Disney style given my custom race was actually inspired by the Disney Ducks universe.  When I put in the race for moderation, it was rejected because of the art on copyright grounds.

I can't say I'm happy about that, but I'm not gonna argue the point.  Though admittedly both me and the artist had a good laugh that they did their work too well.

I'm trying to remove the picture entirely but there doesn't seem to be a way to do that without replacing it with a different picture.  Am I missing something?

The author of the homebrew can declare to a moderator that they have the copyright of the image, with a link to the homebrew itself, and it will be considered in the approval.

I'm not sure I understand the process.  How would I get in touch with a moderator to do that?

Send a PM to me and Sorce, with the link to your homebrew and saying that you have the right to use the image.

Will do though I have a quick question.  I hired the same artist to draw a picture for the variant which I was also going to put through moderation.  I assume I'll have to repeat the process.  Is that right?

Yes, if you let us know before submission, it will be better.

Sounds fair.  Thank you so much!  :)