Dont see config folder under Katalon 7.8

I see a config folder and session folder under Katalon 7.1.2 and consumes lot of disk space.
Hence planning to delete those as it has been used an year ago last time.

Now, I am using Katalon 7.9 run time and I only see configuration folder and not the config folder.

Question 1: can manually clean up all the session folder under katalon_Studio_engine_windows_64_7.1.2\config?
Question 2: Why dont I see the same in Katalon 7.9. is the folder not relevant anymore and became obsolete?