When I upgraded to WP 3.9, some of my ACF fields show up in the "Attachment Details" sidebar of the WP "add media" window. They are all fields that are related to images and captions, but don't actually have anything to do with the media. I tried completing the fields, just to see if they would populate if I added that image to the page, and they did not. So they're not functioning. How can I remove these fields? The fields existed prior to the upgrade to 3.9 and ACF 4.3.7, but they were not in the sidebar before the upgrade.