nettee: remove broken shell scripts

pkgs/by-name/ne/nettee/package.nix

···
 
   nativeBuildInputs = [ cmake ];
 
+  # additional shell scripts require accudate (not in nixpkgs)
+  postInstall = ''
+    rm $out/bin/*.sh
+  '';
+
   nativeInstallCheckInputs = [
     versionCheckHook
   ];