Auto merge of #37758 - euclio:unstable, r=brson

do not use deprecated text for unstable docs

![2016-11-13-18 55 23](https://cloud.githubusercontent.com/assets/1372438/20249943/d7f684a2-a9d2-11e6-8c5a-a2bfe354b9aa.png)
![2016-11-13-18 55 12](https://cloud.githubusercontent.com/assets/1372438/20249942/d7f6595a-a9d2-11e6-9240-07f5a89367f4.png)

![2016-11-13-18 54 00](https://cloud.githubusercontent.com/assets/1372438/20249946/da176d46-a9d2-11e6-8f34-c09cff9bcc15.png)
![2016-11-13-18 54 45](https://cloud.githubusercontent.com/assets/1372438/20249941/d7d9837a-a9d2-11e6-99f4-e4bf8807b1c9.png)

1 files changed, 0 insertions, 3 deletions

diff --git a/src/libsyntax/attr.rs b/src/libsyntax/attr.rs
index 57a936bf9b0..2977e340a3c 100644
--- a/src/libsyntax/attr.rs
+++ b/src/libsyntax/attr.rs
@@ -789,9 +789,6 @@ fn find_stability_generic<'a, I>(diagnostic: &Handler,
     // Merge the deprecation info into the stability info
     if let Some(rustc_depr) = rustc_depr {
         if let Some(ref mut stab) = stab {
-            if let Unstable {reason: ref mut reason @ None, ..} = stab.level {
-                *reason = Some(rustc_depr.reason.clone())
-            }
             stab.rustc_depr = Some(rustc_depr);
         } else {
             span_err!(diagnostic, item_sp, E0549,