CmdID / PowerShell / Cmdlets / Remove
Remove-ATPProtectionPolicyRule
Use the Remove-ATPProtectionPolicyRule cmdlet to remove rules from Microsoft Defender for Office 365 protections in preset security policies. Exchange PowerShell reference
From the Exchange PowerShell reference 3 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the rule that you want to remove.-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.