util/perl/OpenSSL/OID.pm: remove the included unit test
util/perl/OpenSSL/OID.pm: remove the included unit test

The unit test uses features that appeared in perl 5.12, and is
therefore a source of trouble when building.

Reviewed-by: Matt Caswell <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11704)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl