You can delete alert prediction policies from the Alert Prediction Policies page.
- Go to Setup > Alerts > Alert Prediction to display the list of defined alert prediction policies. - You can select the number of alert prediction policies to display per page. 
- Select the client for the alert prediction policies you want to delete. 
- Select the checkbox for one or more policies you want to delete. 
- Click Remove. 
- Click Yes to the confirmation message to delete the policy.