I have found a cmdlet which removes all the policy relative to there name of the policy.
Remove-RetentionPolicy -Identity "Business Critical" -Confirm:$false -Force
It seems that this is a tenant removal.
Please verify if this will work for removing the policy from the "closer and deletion" section of SPO admin and from the from the tenant or if some thing more involved needs to be placed in a script like a loop? Please help.