Shorten deprecation note

Author: varkor

src/librustdoc/html/render.rs

@@ -2113,7 +2113,7 @@ fn short_stability(item: &clean::Item, cx: &Context, show_reason: bool) -> Vec<S
                         since,
                         MarkdownHtml(&deprecated_reason))
             } else {
-                format!("This will be deprecated in {}{}",
+                format!("Deprecating in {}{}",
                         Escape(&stab.deprecated_since),
                         MarkdownHtml(&deprecated_reason))
             };
@@ -2171,7 +2171,7 @@ fn short_stability(item: &clean::Item, cx: &Context, show_reason: bool) -> Vec<S
                     since,
                     MarkdownHtml(&note))
         } else {
-            format!("This will be deprecated in {}{}",
+            format!("Deprecating in {}{}",
                     Escape(&depr.since),
                     MarkdownHtml(&note))
         };

src/test/rustdoc/deprecated-future.rs

@@ -11,6 +11,6 @@
 #![feature(deprecated)]
 
 // @has deprecated_future/struct.S.html '//*[@class="stab deprecated"]' \
-//      'This will be deprecated in 99.99.99: effectively never'
+//      'Deprecating in 99.99.99: effectively never'
 #[deprecated(since = "99.99.99", note = "effectively never")]
 pub struct S;