Disable unused Python 2 variant. am: 1d9b518c73 am: 2c51ee5233 am: cd3030a0bd

Original change: https://android-review.googlesource.com/c/platform/external/python/apitools/+/2221448

Change-Id: Ifb0ed3eb48e990989c90f426a9fb6977da29ee96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>