Can I delete the Adobe ARM folder? Will anything break if I delete it?

On my disk, the ARM folder (/ProgramData/Adobe/ARM) is taking up almost 20GB of space! This isn't too great, because my PC has an already very small amount of C drive space, and the fact that a folder I never even knew I had is taking up a fifth of my total space isn't particularly great. I would just like to know if it is safe to delete this ARM folder, because this is taking up more space than any of the users of this device are on their own. 

If I can't delete the whole folder, are there any large folders in the ARM folder, related Adobe files, or large cache files that I can get rid of? My PC is coming to the end of its life, and I don't think that this 18 gigabyte folder is helping it at all.

Many thanks.