function onDelete( error ) {
		if ( error ) {
			debug( 'Encountered an error when deleting temporary file: %s', error.message );
			return console.error( 'WARNING: encountered an error when deleting temporary file. Error: %s', error.message ); // eslint-disable-line no-console
		}
		debug( 'Successfully deleted temporary file.' );
	}
Callback invoked upon removing a temporary file.

@private
@param {Error} [error] - error object
@returns {void}