Disable Python 2 for py-ply. am: 6b0a51bc2f am: db87a1c648 am: 5f5d57771c am: 9637e52ede am: 3eb44c25ad

Original change: https://android-review.googlesource.com/c/platform/external/ply/+/2219411

Change-Id: I38aa2ba948c420b381e0d186610a6903813b423c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>