It sounds like these are the files for IIS rather then Touchaper. There are some settings in the web site properties in IIS manager for managing the log files.
Correct - this would be the IIS log files. IIS is the Windows stuff that hosts the www-sites. On systems that host a LOT of traffic for a lot of devices, you can get up to 100-ish MB of log per day, so a weekly / monthly routine check would be recommended (archiving the logs if you need them, otherwise deleting them).
As a general thing, these logs are "safe" to delete, in that nothing will break just because you've done so.
LANDesk EMEA Technical Lead