Disable unused Python 2 variant. am: 1d9b518c73

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

Change-Id: I28b0451681dc9d451499b7ca1720a4697fe67b22
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>