Auto merge of #4965 - sfackler:patch-2, r=alexcrichton
authorbors <bors@rust-lang.org>
Sun, 21 Jan 2018 18:09:41 +0000 (18:09 +0000)
committerbors <bors@rust-lang.org>
Sun, 21 Jan 2018 18:09:41 +0000 (18:09 +0000)
Remove outdated stability note

Closes #4964


Trivial merge