nixos/display-managers: don't start pulseaudio

Hey, we have sockets.

nixos/modules/services/x11/display-managers/default.nix

@@ -54,14 +54,6 @@ let
         exec &> >(tee ~/.xsession-errors)
       ''}
 
-      # Start PulseAudio if enabled.
-      ${optionalString (config.hardware.pulseaudio.enable) ''
-        # Publish access credentials in the root window.
-        if ${config.hardware.pulseaudio.package.out}/bin/pulseaudio --dump-modules | grep module-x11-publish &> /dev/null; then
-          ${config.hardware.pulseaudio.package.out}/bin/pactl load-module module-x11-publish "display=$DISPLAY"
-        fi
-      ''}
-
       # Tell systemd about our $DISPLAY and $XAUTHORITY.
       # This is needed by the ssh-agent unit.
       #