compressDrv: get rid of unneeded extra params

This is a leftover from the original versions of #292324. Reduces the
API surface to not accept accidental arguments.

pkgs/build-support/compress-drv/default.nix

@@ -36,7 +36,7 @@
   examples.
 */
 drv:
-{ formats, compressors, ... }:
+{ formats, compressors }:
 let
   validProg =
     ext: prog:

pkgs/build-support/compress-drv/web.nix

@@ -95,7 +95,6 @@ drv:
     "gz" = "${zopfli}/bin/zopfli --keep {}";
     "br" = "${brotli}/bin/brotli --keep --no-copy-stat {}";
   },
-  ...
 }:
 compressDrv drv {
   formats = formats ++ extraFormats;