security/heimdal-devel: Fix configure and package

Remove libmicrohttpd support. If installed it will automatically detect
and build the necessary binaries to support a microhttpd KDC server.
It is felt that a KDC with httpd support is another vector of concern.

Fixes: 4e44a84dcc9a
(cherry picked from commit e87043c6c23184ab537a67e013a6a1f6d4501c3e)