Disable unused Python 2 variant. am: 1d9b518c73 am: 2c51ee5233 am: cd3030a0bd am: 1d96fb9445 am: 11d7e4d6b0

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

Change-Id: I3ef3a18246bcad26734a579ab00d70165d1ee1d8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>