Don't use c-toggle-{electric-state,auto-newline} globally

Fixes an odd error where:

1. You open an elixir-mode buffer
2. elixir-mode sets `mode-name` to a non-string value
3. cc-mode is pulled in by one of its dependencies
4. `c-toggle-electric-state` is called from the config/default module
5. Which calls `c-update-modeline`
6. Which operates on `mode-name` and assumes it is a string
7. And a wrong-type-argument: stringp error is thrown

modules/config/default/config.el

@@ -123,9 +123,7 @@
     ;; Disable electric keys in C modes because it interferes with smartparens
     ;; and custom bindings. We'll do it ourselves (mostly).
     (after! cc-mode
-      (c-toggle-electric-state -1)
-      (c-toggle-auto-newline -1)
-      (setq c-electric-flag nil)
+      (setq-default c-electric-flag nil)
       (dolist (key '("#" "{" "}" "/" "*" ";" "," ":" "(" ")" "\177"))
         (define-key c-mode-base-map key nil))