login: drop unnecessary dependency to libacl

With c960ca2be1, logind does not handle
ACL anymore, but triggers events for udevd and udevd updates ACL.
Hence, libacl is not necessary for logind.

src/login/meson.build

@@ -50,7 +50,6 @@ executables += [
                 'include_directories' : [libexec_template['include_directories'], include_directories('.')],
                 'extract' : systemd_logind_extract_sources,
                 'dependencies' : [
-                        libacl,
                         threads,
                 ],
         },