Remove Emacs config for Google languages

My custom language settings conflict with Google-Emacs's language settings, and
I'm not interested in finding a more harmonious solution. For now, I'm dropping
my settings altogether in favor of Google-Emacs's settings.

emacs/.emacs.d/init.el

@@ -18,7 +18,4 @@
 (require 'wpc-nix)
 (require 'wpc-rust)
 (require 'wpc-clojure)
-(require 'wpc-python)
-(require 'wpc-javascript)
 (require 'wpc-prolog)
-(require 'wpc-golang)

emacs/default.nix

@@ -49,7 +49,6 @@ let
       password-store
       ivy-pass
       clipmon # TODO: Prefer an Emacs client for clipmenud.
-      protobuf-mode # TODO: Determine if this is coming from google-emacs.
       evil
       evil-collection
       evil-magit