perl-Apache_Htpasswd: remove module from IPFire

perl-Apache_Htpasswd: remove module from IPFire

- This module was only used for the proxy.cgi and chpasswd.cgi files for the local
   authentication option.
- As this module was last updated in Nov 2012 its use has been replaced by direct use
   of htpasswd. This is dealt with by other patches in this set.
- With those changes this module is no longer required.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>