moved guru-mode to prog-mode-hook only

prelude/prelude-editor.el

@@ -198,10 +198,6 @@
 (add-to-list 'yas/snippet-dirs prelude-snippets-dir)
 (yas/global-mode 1)
 
-;; became an Emacs guru in the keystroke department
-(require 'guru-mode)
-(guru-mode +1)
-
 ;; projectile is a project management mode
 (require 'projectile)
 (projectile-global-mode t)