Revert "fixup! knot-resolver: temporarily make it pass"

This reverts commit 11fd36353e.

The underlying issue has been fixed in
https://github.com/NixOS/nixpkgs/pull/300905/files, this workaround is
not needed anymore.

pkgs/servers/dns/knot-resolver/default.nix

@@ -120,8 +120,8 @@ wrapped-full = runCommand unwrapped.name
     allowSubstitutes = false;
     inherit (unwrapped) meta;
   }
-  (assert false; # FIXME: the http module won't work; see PR #286822
-  ''
+  assert false; # FIXME: the http module won't work; see PR #286822
+  (''
     mkdir -p "$out"/bin
     makeWrapper '${unwrapped}/bin/kresd' "$out"/bin/kresd \
       --set LUA_PATH  "$LUA_PATH" \