CmdID / PowerShell / Cmdlets / Remove
Remove-HostedOutboundSpamFilterPolicy
Use the Remove-HostedOutboundSpamFilterPolicy cmdlet to remove outbound spam filter policies from your cloud-based organization. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the outbound spam filter policy you want to remove.-ForceThe Force switch hides warning or confirmation messages.