This function deletes hook by id.
Doesn't return any data.
jetapi backup -F deleteHook -D '_id=5b3219e1d5ac5e453a7cb842'
https://hostname.example.com:2087/cpsess##########/cgi/addons/jetbackup/api.cgi?function=deleteHook&_id=5b3219e1d5ac5e453a7cb842