Disable unused Python 2 variant. am: 3dff7137c6 am: 60283c5ba5 am: 093e39b381

Original change: https://android-review.googlesource.com/c/platform/external/python/asn1crypto/+/2221327

Change-Id: I3276e873ecb61234dc9c5fc25972d80ddeab5448
Signed-off-by: Automerger Merge Worker <[email protected]>