beam_minimal: disable systemdSupport

This is an unnecessary expansion of the closure for a package that is used in non-systemd environments.
systemd support is only necessary for epmd when used with systemd sockets.
We already default `services.epmd.package` to `pkgs.erlang` which uses the full `beam` erlang.

pkgs/development/interpreters/erlang/generic-builder.nix

@@ -51,7 +51,6 @@
   odbcSupport ? false,
   odbcPackages ? [ unixODBC ],
   opensslPackage ? openssl,
-  systemdSupport ? lib.meta.availableOn stdenv.hostPlatform systemd,
   wxPackages ? [
     libGL
     libGLU

pkgs/top-level/all-packages.nix

@@ -7381,6 +7381,7 @@ with pkgs;
   beam = callPackage ./beam-packages.nix { };
   beam_minimal = callPackage ./beam-packages.nix {
     beam = beam_minimal;
+    systemdSupport = false;
     wxSupport = false;
   };