makeModulesClosure: Small cleanup

pkgs/build-support/kernel/modules-closure.nix

···
 stdenv.mkDerivation {
   name = kernel.name + "-shrunk";
   builder = ./modules-closure.sh;
-  buildInputs = [nukeReferences];
-  inherit kernel rootModules kmod allowMissing;
+  buildInputs = [ nukeReferences kmod ];
+  inherit kernel rootModules allowMissing;
   allowedReferences = ["out"];
 }

pkgs/build-support/kernel/modules-closure.sh

···
 
 set -o pipefail
 
-PATH=$kmod/sbin:$PATH
-
 version=$(cd $kernel/lib/modules && ls -d *)
 
 echo "kernel version is $version"