more-itertools: upgraded package to upstream

Upgraded dev-python/more-itertools to version 4.2.0-r1 on amd64
Downgraded to EAPI 6

BUG=chromium:934414
TEST=None

Change-Id: I62cd04129195e49e9bc834d63aa8f06968359a6b
Reviewed-on: https://chromium-review.googlesource.com/1562096
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Chris McDonald <cjmcdonald@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
4 files changed