How to remove the Tool - getusersession in the AI - Purchase Requisition Status Advisor

Summary:

We have created a custom Agent by doing a copy template from the AI - Purchase Requisition Status Advisor. The AI is working fine, however the AI is only showing the requisitions for the requester, where I have logged in. Hence, we wish to delete the tool - 'getusersession' in the AI - Purchase Requisition Status Advisor. So, that the results are not limited to the preparer session and it would give requisitions by requester and preparer outside the session as well. However, we can only see option to 'View Details' and no options is there to remove or delete?