[3.7] bpo-36152: IDLE: Remove unused parameter from colorizer (GH-12109) by miss-islington · Pull Request #12119 · python/cpython

@csabella @miss-islington

Remove colorizer.ColorDelegator.close_when_done and the corresponding argument of .close().  In IDLE, both have always been None or False since 2007.
(cherry picked from commit b9f0354)

Co-authored-by: Cheryl Sabella <cheryl.sabella@gmail.com>

csabella