Disable unused Python 2 variant. am: 7db25af7a5 am: e3b05970d4 am: 6cf5910b3f am: d48cbd09ef

Original change: https://android-review.googlesource.com/c/platform/external/python/pyasn1/+/2221453

Change-Id: I33ec0a7ab5b3aaa4ef1533caa13d933b788bee7e
Signed-off-by: Automerger Merge Worker <[email protected]>