Remove beacon-mode

In the end of the day I've decided it adds little value, so it's best
to leave it to the users to decide if they want to use it or not.

core/prelude-packages.el

@@ -57,7 +57,6 @@
   '(ace-window
     avy
     anzu
-    beacon
     browse-kill-ring
     crux
     discover-my-major

core/prelude-ui.el

@@ -79,10 +79,6 @@
 (when prelude-theme
   (load-theme prelude-theme t))
 
-;; show the cursor when moving after big movements in the window
-(require 'beacon)
-(beacon-mode +1)
-
 ;; show available keybindings after you start typing
 (require 'which-key)
 (which-key-mode +1)