vimPlugins.Spacegray-vim: move to overrides.nix

The GitHub repository returns 404, which breaks the update script

pkgs/applications/editors/vim/plugins/generated.nix

@@ -363,18 +363,6 @@ final: prev:
     meta.homepage = "https://github.com/SpaceVim/SpaceVim/";
   };
 
-  Spacegray-vim = buildVimPluginFrom2Nix {
-    pname = "Spacegray.vim";
-    version = "2021-07-06";
-    src = fetchFromGitHub {
-      owner = "ackyshake";
-      repo = "Spacegray.vim";
-      rev = "c699ca10ed421c462bd1c87a158faaa570dc8e28";
-      sha256 = "0ma8w6p5jh6llka49x5j5ql8fmhv0bx5hhsn5b2phak79yqg1k61";
-    };
-    meta.homepage = "https://github.com/ackyshake/Spacegray.vim/";
-  };
-
   SudoEdit-vim = buildVimPluginFrom2Nix {
     pname = "SudoEdit.vim";
     version = "2022-11-03";

pkgs/applications/editors/vim/plugins/overrides.nix

@@ -831,6 +831,19 @@ self: super: {
       propagatedBuildInputs = [ sniprun-bin ];
     };
 
+  # The GitHub repository returns 404, which breaks the update script
+  Spacegray-vim = buildVimPluginFrom2Nix {
+    pname = "Spacegray.vim";
+    version = "2021-07-06";
+    src = fetchFromGitHub {
+      owner = "ackyshake";
+      repo = "Spacegray.vim";
+      rev = "c699ca10ed421c462bd1c87a158faaa570dc8e28";
+      sha256 = "0ma8w6p5jh6llka49x5j5ql8fmhv0bx5hhsn5b2phak79yqg1k61";
+    };
+    meta.homepage = "https://github.com/ackyshake/Spacegray.vim/";
+  };
+
   sqlite-lua = super.sqlite-lua.overrideAttrs (old: {
     postPatch = let
       libsqlite = "${sqlite.out}/lib/libsqlite3${stdenv.hostPlatform.extensions.sharedLibrary}";

pkgs/applications/editors/vim/plugins/vim-plugin-names

@@ -29,7 +29,6 @@ https://github.com/vim-scripts/ShowMultiBase/,,
 https://github.com/tmhedberg/SimpylFold/,,
 https://github.com/jaredgorski/SpaceCamp/,,
 https://github.com/SpaceVim/SpaceVim/,,
-https://github.com/ackyshake/Spacegray.vim/,,
 https://github.com/chrisbra/SudoEdit.vim/,,
 https://github.com/ackyshake/VimCompletesMe/,,
 https://github.com/hsitz/VimOrganizer/,,