lib: remove obsolete AVOID_INTERNALS

Although commit 1f246c38 enabled
the self-check functions unconditionally, the #ifdefs AVOID_INTERNALS
remained in lib/crypto-selftests-pk.c.

Signed-off-by: Vitezslav Cizek <vcizek@suse.com>
25 jobs for AVOID_INTERNALS in 185 minutes and 46 seconds (queued for 1 minute and 25 seconds)