Marking as resolved; I will add a tooltip in the “Audit Logs” panel with information explaining why this is not possible and why this is a bad idea, for the time being if anyone else is interested in the answer here it is:
The plugin stores the security logs in two different places, locally using a plain text file located in the data storage path defined by the user, which by default is a custom directory in the uploads folder; the second place is in a remote server monitored by Sucuri. If a malicious user launches an attack against your website the plugin will register every relevant action in these two places, if they gain access to the administrative interface or the server itself, they will hide their fingerprints deleting the local security logs and you will not have access to any information that can be used to investigate the security breach. However, since Sucuri stores a copy of these logs you can simply use your API key to retrieve a copy of all the events registered during the attack. If we allow people to delete these remote logs then you will have no way to investigate the attack; this is why we do not allow the deletion of the information shown in the audit logs panel.