Girocco/Notify.pm: tidy up use'd modules

Girocco/Notify.pm: tidy up use'd modules

CIA has been defunct for a while now.
Since only CIA needed the RPC::XML modules, comment them out.

Also make sure the CIA.vc is defunct only shows up once per push
rather than once per commit.

Remove the enclosing BEGIN from around the `use` lines that
imply their own BEGIN scope -- no need for nested BEGIN scopes.

Switch to the recently added `to_json` function and get rid
of the `use JSON`.  The only thing needed to support the POST
of the JSON blob is now LWP::UserAgent.

Signed-off-by: Kyle J. McKay <mackyle@gmail.com>