mautrix-facebook: Use default Python platforms
mautrix-facebook: Use default Python platforms

There are no known compatibility issues so no reason to restrict it.

See the discussion in: https://github.com/NixOS/nixpkgs/pull/201357#issuecomment-1322087963

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs