[emacs] temporarily disabling powerline

Waiting for a startup error to be resolved:
https://github.com/milkypostman/powerline/issues/80

Debugger entered--Lisp error: (void-variable left)
  powerline-reset()
  require(powerline)
  eval((require (quote powerline)) nil)
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
  call-interactively(eval-last-sexp nil nil)
  command-execute(eval-last-sexp)

.emacs.d/emacs.org

@@ -258,6 +258,7 @@ languages. Setting ~Confirm Evaluation~ to ~No~ disables the
 #+name: packages
 #+BEGIN_SRC emacs-lisp
   (use-package powerline
+    :disabled t
     :ensure t
     :init (powerline-default-theme))
 #+END_SRC