post-command-idle-hook

[Nick Roberts <nickrob@snap.net.nz>]

TODO has the following item:

* Small but important fixes needed in existing features:

** Convert everything that uses post-command-idle-hook
  to use idle timers instead.

I can only find two reference to post-command-idle-hook:

1) speedbar.el which, in any case, uses which uses run-with-idle-timer when
   there is no binding for post-command-idle-hook.

2) follow.el which only seems to use post-command-idle-hook to cover the
   case where another function is already on post-command-idle-hook.

Would it be a good idea now to remove post-command-idle-hook from Emacs
and its reference in follow.el?

Nick