conform company and treemacs to use-package style

elisp/extras.el

@@ -80,19 +80,16 @@
   :demand t
   :bind ("C-x g" . 'magit-status))
 
-;; ;; code completion
+;; code completion
 (use-package company
-  :demand t
-  :config
-  (add-hook 'after-init-hook 'global-company-mode))
+  :hook (after-init . global-company-mode))
 
 (use-package tomlparse)
 
 ;; TODO I'm only using demand so <f3> is set from the start
 (use-package treemacs
   :demand t
-  :config
-  (global-set-key (kbd "<f3>") 'treemacs))
+  :bind ("<f3>" . 'treemacs))
 
 ;; Javascript and React
 (use-package rjsx-mode