Remove support for python2, which was EOL two years ago. am: d635737d8b

Original change: https://android-review.googlesource.com/c/platform/external/python/funcsigs/+/2185739

Change-Id: I3e7860f8a2a4ee0cc717914b9744e2016506c782
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>