Revert r1.57 and r1.58 per Will Rowe's veto.

(I intend to add this back in if/when mod_authn_file can support the
{algo} password semantics, but we can't do a release with this code in
place.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96817 13f79535-47bb-0310-9956-ffa450edef68