gamemode: move to pkgs/by-name

this shouldn't create any rebuilds

pkgs/by-name/ga/gamemode/package.nix

@@ -2,7 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
-  libgamemode32,
+  pkgsi686Linux,
   makeWrapper,
   meson,
   ninja,
@@ -49,7 +49,7 @@ stdenv.mkDerivation (finalAttrs: {
           ]
           ++ lib.optionals (stdenv.hostPlatform.system == "x86_64-linux") [
             # Support wrapping 32bit applications on a 64bit linux system
-            libgamemode32
+            pkgsi686Linux.gamemode.lib
           ]
         )
       }

pkgs/top-level/all-packages.nix

@@ -991,10 +991,6 @@ with pkgs;
 
   dehinter = with python3Packages; toPythonApplication dehinter;
 
-  gamemode = callPackage ../tools/games/gamemode {
-    libgamemode32 = pkgsi686Linux.gamemode.lib;
-  };
-
   gamescope-wsi = callPackage ../by-name/ga/gamescope/package.nix {
     enableExecutable = false;
     enableWsi = true;