build: Use stock tap-driver from automake

Previously, we used a custom TAP driver written in Python.  Now that
Automake's TAP driver has sufficient features, the script should be no
longer necessary.
6 jobs for wip/dueno/tap in 8 minutes and 10 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #93497
fedora:asan

00:07:07

passed #93499
fedora:coverage

00:07:16

71.2%
passed #93498
fedora:ubsan

00:06:43

passed #93496
fedora:Werror

00:07:51

 
  Deploy
passed #93500
pages

00:00:18

passed pages:deploy

00:00:00