ReleaseNotes: remove in-progress warning

git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_39@279131 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ReleaseNotes.rst

-=====================================
-Clang 3.9 (In-Progress) Release Notes
-=====================================
+=======================
+Clang 3.9 Release Notes
+=======================
 
 .. contents::
    :local:
@@ -8,12 +8,6 @@ Clang 3.9 (In-Progress) Release Notes
 
 Written by the `LLVM Team <http://llvm.org/>`_
 
-.. warning::
-
-   These are in-progress notes for the upcoming Clang 3.9 release. You may
-   prefer the `Clang 3.8 Release Notes
-   <http://llvm.org/releases/3.8.0/tools/clang/docs/ReleaseNotes.html>`_.
-
 Introduction
 ============
 
@@ -31,11 +25,6 @@ the latest release, please check out the main please see the `Clang Web
 Site <http://clang.llvm.org>`_ or the `LLVM Web
 Site <http://llvm.org>`_.
 
-Note that if you are reading this file from a Subversion checkout or the
-main Clang web page, this document applies to the *next* release, not
-the current one. To see the release notes for a specific release, please
-see the `releases page <http://llvm.org/releases/>`_.
-
 What's New in Clang 3.9?
 ========================