This doesn't really seem worthy of a relnote... Shout if you disagree!

llvm-svn: 145259

clang/docs/ReleaseNotes.html

@@ -156,7 +156,6 @@ prose in a section of its own. When doing that, delete the notes.</p>
   <li>ObjC ARC -- get a blurb from rjmccall</li>
   <li>ObjC related result type/instancetype</li>
   <li>Thread Safety attributes and correctness analysis added to Clang.</li>
-  <li>API -- Many opaque typedefs in Sema around AST nodes are gone.</li>
   <li>NRVO for blocks.</li>
   <li>Major improvements to the interactions between serializing and
   deserializing the AST and the preprocessor -- argiris</li>