[1.0.rc-1] Unwanted UpdateOperators message in OwnershipMessage Enum

[daniel-wehbe]

Describe the bug
In our ADO base messages, we have OwnershipMessages:

#[cw_serde]
pub enum OwnershipMessage {
    UpdateOwner {
        new_owner: Addr,
        expiration: Option<Expiration>,
    },
    RevokeOwnershipOffer,
    AcceptOwnership,
    Disown,
    UpdateOperators {
        new_operators: Vec<Addr>,
    },
}

The last message UpdateOperators should be removed (Along with its implementation) as we have removed the use of Operators from our ADOs (replaced by permissioning)

[joemonem]

It's been removed, PR #318 takes care of it.