Remove outdated comment from Poll::poll
Talking about deprecated and removed APIs.
diff --git a/src/poll.rs b/src/poll.rs
index efd5555..e4cd804 100644
--- a/src/poll.rs
+++ b/src/poll.rs
@@ -238,13 +238,6 @@
/// granularity (usually 1ms), and kernel scheduling delays mean that
/// the blocking interval may be overrun by a small amount.
///
- /// `poll` returns the number of readiness events that have been pushed into
- /// `events` or `Err` when an error has been encountered with the system
- /// selector. The value returned is deprecated and will be removed in 0.7.0.
- /// Accessing the events by index is also deprecated. Events can be
- /// inserted by other events triggering, thus making sequential access
- /// problematic. Use the iterator API instead. See [`iter`].
- ///
/// See the [struct] level documentation for a higher level discussion of
/// polling.
///
