feeds: remove the unused update.nix file

pkgs/feeds/template.nix

@@ -15,9 +15,6 @@ stdenv.mkDerivation {
     inherit url;
   };
   passthru.updateScript = [ ./update.py url jsonPath ];
-  # passthru.updateScript = callPackage ./update.nix {
-  #   inherit url jsonPath;
-  # };
   meta = {
     description = "metadata about any feeds available at ${feedName}";
     homepage = feedName;

pkgs/feeds/update.nix

@@ -1,18 +0,0 @@
-{ lib
-, curl
-, jq
-, runtimeShell
-, writeScript
-# feed-specific args
-, jsonPath
-, url
-}:
-
-let
-  apiQuery = "https://feedsearch.dev/api/v1/search?url=${url}";
-in
-writeScript "update-feed" ''
-  #!${runtimeShell}
-  PATH=${lib.makeBinPath [ curl jq  ]}
-  curl -X GET '${apiQuery}' | jq '.[-1]' > '${jsonPath}'
-''