Disable unused Python 2 variant. am: 7c52d39928 am: 30fa17ab2e

Original change: https://android-review.googlesource.com/c/platform/external/python/six/+/2221607

Change-Id: Id1b0104757fb9ebb8f004cb2352702f97710b453
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>