Removal of user authentication extension

[utelle]

According to this post on the SQLite forum the User Authentication Extension has been formally deprecated (see also SQLite Check-In message or deprecation notice in file user-auth.txt).

Therefore I intend to remove the User Authentication Extension from the SQLite3 Multiple Ciphers code base for the next release.

If someone has strong arguments to keep this extension in the SQLite3 Multiple Ciphers code base, please drop a note here.

[utelle]

No feedback is also a kind of feedback.

For the version of SQLite3 Multiple Ciphers based on SQLite 3.46.0 (expected in July 2024) the source code of the user authentication extension will be removed from the code base.

[topmin]

Good!