Function delete 

pub fn delete<I, E>(delete_input: I) -> Result<HoloHash<Action>, WasmError>
where
    DeleteInput: TryFrom<I, Error = E>,
    WasmError: From<E>,

General function that can delete any entry type.

This is used under the hood by delete_entry, delete_cap_grant and delete_cap_claim.

The host builds a Delete action for the passed entry and commits a new record to the chain.

Usually you don’t need to use this function directly; it is the most general way to delete an entry and standardizes the internals of higher level delete functions.