Ongoing maintenance for QoS consists of updating or removing QoS policies as necessary and monitoring QoS policies to ensure that they are applied and functioning properly. The sections that follow describe ongoing maintenance in more detail.
You can remove QoS policies by using the Group Policy Management console.
In Administrative Tools, open the Group Policy Management console.
Right-click the GPO containing the policy, and then click Edit.
In the Group Policy Management Editor, expand either User Configuration or Computer Configuration, expand Windows Settings, and then click Policy-Based QoS.
In the Details pane, right-click the policy you want to remove, and then click Delete Policy. ...