restic-rest-server: remove vars from patch url

addresses feedback from #172817.
style only. no functional changes.

pkgs/tools/backup/restic/rest-server.nix

···
 buildGoModule rec {
   pname = "restic-rest-server";
   version = "0.11.0";
-  owner = "restic";
-  repo = "rest-server";
 
   src = fetchFromGitHub {
-    inherit owner repo;
+    owner = "restic";
+    repo = "rest-server";
     rev = "v${version}";
     hash = "sha256-ninPODztNzvB2js9cuNAuExQLK/OGOu80ZNW0BPrdds=";
   };
···
   patches = [
     (fetchpatch {
       name = "backport_rest-server_tests_os.TempDir.patch";
-      url = "https://github.com/${owner}/${repo}/commit/a87a50ad114bdaddc895413396438df6ea0affbb.patch";
+      url = "https://github.com/restic/rest-server/commit/a87a50ad114bdaddc895413396438df6ea0affbb.patch";
       sha256 = "sha256-O6ENxTK2fCVTZZKTFHrvZ+3dT8TbgbIE0o3sYE/RUqc=";
     })