Security Manager allows administrators to remove SharePoint Group using a single operation.
1.Select a site from the Navigation area where the group is located.
2.Press the Groups button to view a list of available groups.
3.Select the group(s) that need to be removed
4.Press the Del key (or from the right-click menu select the Delete option).
5.In the provided window, confirm the delete operation.
6.Press OK to begin the operation.