Saving files in Camera Raw?

Do you mean the Limit File Size option in the Save Options dialog box? It isn’t gone, they just made it more accessible. You now click the standard Save icon in the top right corner of Camera Raw. There are also at least two more ways to get to it: Right-click the large preview or the thumbnail preview of the image, and choose Save Image.

There have been a number of posts in the forums about options being “gone,” but in just about all of those cases the option was not gone, just moved or in a panel hidden by a disclosure triangle to save space. If an option isn’t where it was before, don’t jump to the conclusion that it’s gone, because it probably is still there, just in a different place, and sometimes a more accessible place than before.