There are a large number of posts on the CN website (Major and Minor Planetary Imaging) forum on this topic, with a large number of methods proposed to remove it. Some are ...
https://www.cloudynights.com/topic/7...24mc-for-mars/
https://www.cloudynights.com/topic/7...uired-reading/
Personally, I find the easiest and quickest is to simply use the Healing brush tool in Photoshop and paint over the rind. Yes, I'm destroying the data that's there, but as far as I'm concerned the data is destroyed anyway by the diffraction.
You can use a lower sharpened version as a layer over the top, blur it out, non-destructive dodge-and-burn techniques or just learn to love it
. It's completely up to you.