Revert "iamb: fix darwin build"

The ld64 issue has been fixed.

This reverts commit 8f575ecf14.

pkgs/by-name/ia/iamb/package.nix

@@ -6,8 +6,6 @@
   writableTmpDirAsHomeHook,
   versionCheckHook,
   nix-update-script,
-  llvmPackages,
-  stdenv,
 }:
 
 rustPlatform.buildRustPackage (finalAttrs: {
@@ -29,17 +27,8 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   nativeBuildInputs = [
     installShellFiles
-  ]
-  ++ lib.optionals stdenv.hostPlatform.isDarwin [
-    # TODO: Remove once #536365 reaches this branch
-    llvmPackages.lld
   ];
 
-  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
-    # TODO: Remove once #536365 reaches this branch
-    NIX_CFLAGS_LINK = "-fuse-ld=lld";
-  };
-
   postInstall = ''
     installManPage $src/docs/iamb.{1,5}
     install -D $src/docs/iamb.svg -t $out/share/icons/hicolor/scalable/apps