Remove Cache::Memcached from build dependencies

debian/liblemonldap-ng-handler-perl.lintian-overrides

@@ -2,4 +2,3 @@
 # directory, so it must not be readable by all but must be writable by www-data
 liblemonldap-ng-handler-perl: non-standard-dir-perm var/lib/lemonldap-ng/sessions/ 0770 != 0755
 liblemonldap-ng-handler-perl: non-standard-dir-perm var/lib/lemonldap-ng/sessions/lock/ 0770 != 0755
-

lemonldap-ng-handler/Makefile.PL

@@ -9,7 +9,6 @@ WriteMakefile(
     LICENSE        => 'perl',
     PMLIBDIRS      => ['lib'],
     BUILD_REQUIRES => {
-        'Cache::Memcached'  => 0,
         'Digest::HMAC_SHA1' => 0,
         'HTTP::Message'     => 0,
         'IO::Pipe'          => 0,