Function unlock_delegate_dependency 

pub fn unlock_delegate_dependency<E>(code_hash: &E::Hash)
where
    E: Environment,

Unlocks the delegate dependency from the contract.

This removes the lock and refunds the deposit from the call to lock_delegate_dependency. The code of the dependency can be removed if the reference count for the code hash is now zero.

Errors

• If the delegate dependency does not exist.