Optimize steam quirk

quirks/steam.nix

@@ -1,9 +1,10 @@
 { ... }:
 {
+  imports = [
+    ./32bit.nix
+  ];
+
   hardware = {
     steam-hardware.enable = true;
-    graphics = {
-      enable32Bit = true;
-    };
   };
 }