/DELETE DSAn:
       /DELETE /NAME
    Note: This qualifier applies to HBMM operations only. If you
    specify any non-HBMM qualifiers with this one, the command will
    fail.
    Used in conjunction with /POLICY=HBMM, /DELETE removes a host-
    based minimerge (HBMM) policy from a specified shadow set,
    or deletes an HBMM named policy from the entire cluster. For
    example, the following command removes the policy that is
    currently associated with shadow set DSA1:
    $ SET SHADOW /DELETE DSA1 /POLICY=HBMM
    In contrast, the following command removes COMPANY_POLICY from
    the cluster:
    $ SET SHADOW /DELETE /NAME=COMPANY_POLICY /POLICY=HBMM
    You cannot delete the NODEFAULT policy.
    You cannot specify /ALL with /DELETE.