fresh-editor: remove env.RUSTY_V8_ARCHIVE

See https://github.com/sinelaw/fresh/pull/822#issuecomment-3786618059

pkgs/by-name/fr/fresh-editor/package.nix

@@ -6,7 +6,6 @@
   openssl,
   gzip,
   gitMinimal,
-  deno,
   nix-update-script,
   versionCheckHook,
 }:
@@ -37,10 +36,6 @@ rustPlatform.buildRustPackage (finalAttrs: {
     openssl
   ];
 
-  # The v8 package will try to download a `librusty_v8.a` release at build time to our read-only filesystem
-  # To avoid this we pre-download the file and export it via RUSTY_V8_ARCHIVE
-  env.RUSTY_V8_ARCHIVE = deno.librusty_v8;
-
   preBuild = ''
     mkdir -p $out/share/fresh-editor/plugins/
   '';