Revert "telegram-desktop: work around ld64 hardening issue"

The ld64 issue has been fixed.

This reverts commit f5616cc38c.

pkgs/applications/networking/instant-messengers/telegram/telegram-desktop/unwrapped.nix

@@ -34,7 +34,6 @@
   libjxl,
   libicns,
   apple-sdk_15,
-  llvmPackages,
   nix-update-script,
 }:
 
@@ -68,11 +67,6 @@ stdenv.mkDerivation (finalAttrs: {
     # to build bundled libdispatch
     clang
     gobject-introspection
-  ]
-  # Work around ld64's libc++ hardening issue causing Trace/BPT trap: 5
-  # TODO: Remove once nixpkgs#536365 reaches this branch.
-  ++ lib.optionals stdenv.hostPlatform.isDarwin [
-    llvmPackages.lld
   ];
 
   buildInputs = [
@@ -108,12 +102,6 @@ stdenv.mkDerivation (finalAttrs: {
 
   dontWrapQtApps = true;
 
-  # Work around ld64's libc++ hardening issue causing Trace/BPT trap: 5
-  # TODO: Remove once nixpkgs#536365 reaches this branch.
-  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
-    NIX_CFLAGS_LINK = "-fuse-ld=lld";
-  };
-
   cmakeFlags = [
     # We're allowed to used the API ID of the Snap package:
     (lib.cmakeFeature "TDESKTOP_API_ID" "611335")