gdb: migrate to by-name

pkgs/by-name/gd/gdb/package.nix

@@ -29,7 +29,6 @@
   python3,
   enableDebuginfod ? lib.meta.availableOn stdenv.hostPlatform elfutils,
   elfutils,
-  guile ? null,
   hostCpuOnly ? false,
   enableSim ? false,
   safePaths ? [
@@ -94,7 +93,6 @@ stdenv.mkDerivation rec {
     zlib
     zstd
     xz
-    guile
     sourceHighlight
   ]
   ++ lib.optional pythonSupport python3

pkgs/top-level/all-packages.nix

@@ -6539,10 +6539,6 @@ with pkgs;
     enablePythonApi = false;
   };
 
-  gdb = callPackage ../development/tools/misc/gdb {
-    guile = null;
-  };
-
   gdbHostCpuOnly = gdb.override { hostCpuOnly = true; };
 
   valgrind-light = (valgrind.override { gdb = null; }).overrideAttrs (oldAttrs: {