Revert "docs/community-builder: add note about darwin keys"

This reverts commit 008c339c6b.

modules/darwin/community-builder/users.nix

@@ -3,9 +3,6 @@ let
   # To add yourself:
   # 1. Add an entry to this list, using the next UID.
   # 2. Create a file in `keys` named your user name that contains your SSH key(s), separated by newlines.
-
-  # Note: currently the darwin build box doesn't support FIDO keys.
-  # https://github.com/nix-community/infra/issues/1007
   users = [
     {
       name = "winter";