Merge DENYLIST-LATEST into DENYLIST and remove the per-kernel denylist
files. With LATEST being the only kernel mode, there's no need for
separate files. Also remove the s390x denylist (libbpf CI only tests
x86_64) and drop stale entries fixed upstream.
Add map_kptr, test_profiler (kprobes not available in VM kernel), and
sockmap udp multi channels (flaky) based on CI run results.
Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>