Remove a couple of kill-related advices

Those are made redundant by the awesome easy-kill.

core/prelude-editor.el

@@ -201,23 +201,6 @@ The body of the advice is in BODY."
 (volatile-highlights-mode t)
 (diminish 'volatile-highlights-mode)
 
-;; note - this should be after volatile-highlights is required
-;; add the ability to copy and cut the current line, without marking it
-(defadvice kill-ring-save (before smart-copy activate compile)
-  "When called interactively with no active region, copy a single line instead."
-  (interactive
-   (if mark-active (list (region-beginning) (region-end))
-     (message "Copied line")
-     (list (line-beginning-position)
-           (line-end-position)))))
-
-(defadvice kill-region (before smart-cut activate compile)
-  "When called interactively with no active region, kill a single line instead."
-  (interactive
-   (if mark-active (list (region-beginning) (region-end))
-     (list (line-beginning-position)
-           (line-beginning-position 2)))))
-
 ;; tramp, for sudo access
 (require 'tramp)
 ;; keep in mind known issues with zsh - see emacs wiki