emacs: fix ensure usage on use-package

emacs/init.el

@@ -113,7 +113,6 @@
   :ensure t)
 
 (use-package ruby-mode
-  :ensure t
   :init
   (defvaralias 'ruby-indent-level 'tab-width)
   (setq ruby-insert-encoding-magic-comment nil))
@@ -125,7 +124,6 @@
 
 ;; org-mode
 (use-package org
-  :ensure t
   :hook ((org-mode . variable-pitch-mode)
          (org-mode . flyspell-mode)
          (org-mode . agw-org-mode))
@@ -226,7 +224,6 @@
   :ensure t)
 
 (use-package whitespace
-  :ensure t
   :hook (prog-mode . whitespace-mode)
   :init
   (setq whitespace-style '(face
@@ -280,6 +277,7 @@
         keyboard-coding-system 'utf-8-unix))
 
 (use-package mozc
+  :ensure t
   :after mule
   :config
   (setq default-input-method "japanese-mozc"))