Disable unused Python 2 variant. am: c2665c9956

Original change: https://android-review.googlesource.com/c/platform/external/python/python-api-core/+/2221803

Change-Id: I0b4a28fc4558931a48a4865c6d818a5ad7a6423a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>