tools/xenstore: remove stale TODO file

The TODO file is not really helpful any longer. It contains only
entries which no longer apply or it is unknown what they are meant
for ("Dynamic/supply nodes", "Remove assumption that rename doesn't
fail").

Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Julien Grall <jgrall@amazon.com>

tools/xenstore/TODO

@@ -1,10 +0,0 @@
-TODO in no particular order.  Some of these will never be done.  There
-are omissions of important but necessary things.  It is up to the
-reader to fill in the blanks.
-
-- Timeout failed watch responses
-- Dynamic/supply nodes
-- Persistant storage of introductions, watches and transactions, so daemon can restart
-- Remove assumption that rename doesn't fail
-- Multi-root transactions, for setting up front and back ends at same time.
-