Stop using mode-icons

With svg-mode-line-themes enabled this package doesn't do much of
anything anymore.

emacs/.emacs.d/Cask

@@ -67,7 +67,6 @@
 (depends-on "lua-mode")
 (depends-on "magit")
 (depends-on "markdown-mode")
-(depends-on "mode-icons")
 (depends-on "moz")
 (depends-on "multiple-cursors")
 (depends-on "noflet")

emacs/.emacs.d/init.el

@@ -1480,7 +1480,6 @@ from myaethon2.core.decorators import (
   (ido-ubiquitous-mode)
   (smex-initialize)
   (global-diff-hl-mode)
-  (mode-icons-mode)
   (desktop-registry-auto-register)
   (yas-global-mode)
   (projectile-global-mode)