Returns a list, elements of which contains ID of the deleted file and
status whether the file is deleted.
Arguments
file_id
required; a length one character vector.
openai_api_key
required; defaults to Sys.getenv("OPENAI_API_KEY")
(i.e., the value is retrieved from the .Renviron file); a length one
character vector. Specifies OpenAI API key.
openai_organization
optional; defaults to NULL; a length one
character vector. Specifies OpenAI organization.