There is no feature to delete the created Katalon Agent, even in the Project Admin ID too lacks this feature.
The agent keeps on piling up and we cannot delete them
I believe it is a great idea to have that option. If you don’t want to use an agent any longer, it can pile up and become very hard to manage without the option to delete agents. It makes sense that you would give us an option to delete or archive as an admin. Vanilla gift card balance
Yes, whenever change comes in the agent version, we need to or should download the latest agent then use it.
And why to keep on holding the old agent which we are not using in the project
Please kindly upvote for more visibility as well
agree with this. upvoted 
yes. agreed
Please upvote
Kindly upvote 