optee-os: remove references to other nix outputs from optee binaries

These are standalone binaries that don't run on Linux, so any references
to other nix output paths are invalid and won't work, hence it is safe
to remove them.

pkgs/misc/optee-os/default.nix

@@ -2,6 +2,7 @@
   dtc,
   fetchFromGitHub,
   lib,
+  nukeReferences,
   pkgsBuildBuild,
   stdenv,
 }:
@@ -61,6 +62,7 @@ let
 
         nativeBuildInputs = [
           dtc
+          nukeReferences
           (pkgsBuildBuild.python3.withPackages (
             p: with p; [
               pyelftools
@@ -89,6 +91,8 @@ let
 
           mkdir -p $out
           cp out/core/{tee.elf,tee-pageable_v2.bin,tee.bin,tee-header_v2.bin,tee-pager_v2.bin,tee-raw.bin} $out
+          nuke-refs $out/*
+
           cp -r out/export-${taTarget} $devkit
 
           runHook postInstall