refactor(tazjin/emacs): Install google-c-style by default

It is easier to do the inverse of this solution: Filter out the
package on the machines that get it from elsewhere.

Change-Id: I2abe112e4e38822d0fc7a47ea0bcedec1e0a96e3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3010
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

users/tazjin/emacs/default.nix

@@ -95,8 +95,9 @@ let
   # Other external packages:
   (with epkgs; [
     exwm
-    vterm
+    google-c-style
     telega
+    vterm
   ]) ++
 
   # Custom packages