Delete an ASA Network Policy

1. Select Devices & Services.
2. Search for the ASA from which you want to delete a policy and select it.
3. In the Management pane, click Configuration.   
4. Click Edit.
5. In the device configuration, look for your network policy and rules.

Network policies are called access-groups in the ASA configuration file and have this format:  

access-group <policy name> <direction of traffic> interface <interface name>

Here is an example of what an access-group entry might look like:

access-group abc-75-1-out out interface interface-1

Network rules are called access-lists in the ASA configuration file and have this format: 

access-list <policy name> extended permit ip any any 

Here is an example of what an access-list entry might look like:

access-list abc-75-1-out extended permit ip any any

6. Highlight and delete the rows containing the network policy and the rows containing the network rules.  
7. Save your changes.
8. Review and deploy now the changes you made, or wait and deploy multiple changes at once.