invalid option in /etc/get_iplayer/options

[planetrocky]

get_iplayer v3.35 has no such option nopurge, see release notes:

https://github.com/get-iplayer/get_iplayer/wiki/release330to339#release332

files/etc/get_iplayer/options:

expiry 3000
nopurge 1

Docker log file:

WARNING: Ignoring invalid option(s) in /etc/get_iplayer/options:
WARNING: nopurge = 1
WARNING: Please remove invalid options from /etc/get_iplayer/options
INFO: Use --dump-options to display all valid options