util/liveiso: Update to NixOS 22.05

Update configs for NixOS 22.05.

pulseaudio-modules-bt has been abandoned, and is superseded by
pulseaudio's native Bluetooth functionality. Thus, remove it.

Change-Id: Ic3b1dbc3c2ab092b576ba2151c93c74d4f298efc
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64969
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@tutanota.com>

util/liveiso/build.sh

@@ -11,4 +11,4 @@ fi
 nix-build '<nixpkgs/nixos>' \
 	-A config.system.build.isoImage \
 	-I nixos-config=$config \
-	-I nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-21.11.tar.gz
+	-I nixpkgs=https://github.com/NixOS/nixpkgs/archive/refs/heads/nixos-22.05.tar.gz

util/liveiso/common.nix

@@ -8,7 +8,7 @@
 		<nixpkgs/nixos/modules/installer/cd-dvd/iso-image.nix>
 	];
 
-	system.stateVersion = "21.11";
+	system.stateVersion = "22.05";
 
 	isoImage = {
 		makeEfiBootable = true;

util/liveiso/graphical.nix

@@ -10,7 +10,6 @@
 	hardware.pulseaudio = {
 		enable = true;
 		package = pkgs.pulseaudioFull;
-		extraModules = with pkgs; [ pulseaudio-modules-bt ];
 	};
 
 	security.polkit = {