release_notes: update

Note, if you want something mentioned in the release notes for 0.11
push it but be real quick ...
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

doc/RELEASE_NOTES

@@ -6,8 +6,6 @@ Release Notes
 
 General notes
 -------------
-This release is binary compatible with 0.8 and 0.9.
-
 See the Changelog file for a list of significant changes. Note, there
 are many more new features and bugfixes than whats listed there.
 
@@ -16,34 +14,3 @@ accepted. If you are experiencing issues with any formally released version of
 FFmpeg, please try git master to check if the issue still exists. If it does,
 make your report against the development code following the usual bug reporting
 guidelines.
-
-
-API changes
------------
-
-A number of additional APIs have been introduced and some existing
-functions have been deprecated and are scheduled for removal in the next
-release. Significant API changes include:
-
-* new audio decoding API which decodes from an AVPacket to an AVFrame and
-is able to use AVCodecContext.get_buffer() in the similar way as video decoding.
-
-* new audio encoding API which encodes from an AVFrame to an AVPacket, thus
-allowing it to properly output timing information and side data.
-
-Please see the git history and the file doc/APIchanges for details.
-
-
-Other notable changes
----------------------
-
-Libavcodec and libavformat built as shared libraries now hide non-public
-symbols. This will break applications using those symbols. Possible solutions
-are, in order of preference:
-1) Try finding a way of accomplishing the same with public API.
-2) If there is no corresponding public API, but you think there should be,
-post a request on the developer mailing list or IRC channel.
-3) Finally if your program needs access to FFmpeg / libavcodec / libavformat
-internals for some special reason then the best solution is to link statically.
-
-Please see the Changelog file and git history for a more detailed list of changes.