Disable unused Python 2 variant. am: c2665c9956 am: cacd92c6ca am: cf033b4835 am: d37e21f443

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

Change-Id: I2e1886e2e6222dd466d879f8d35de1f95b2be173
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>