Revert "ASN1: Added support for using #.REGISTER_NEW"

This temporarily reverts commit
acc09c2aa248d892ee6b894b43c79cb060131b11.

Change-Id: I7a55c8c2da3f65e914b90648ee92c84efd57f1a0
Reviewed-on: https://code.wireshark.org/review/4525
Reviewed-by: Gerald Combs <gerald@wireshark.org>