www: Remove warning about the implementation status

It does not seem to add a lot of value, as it leaves unclear which parts are
mature and whichs not. Adding this informatin also does not make sense, as it
changes rapidly.

llvm-svn: 204447

polly/www/index.html

@@ -64,13 +64,6 @@
       </object>
     </video>
   </div>
-  <b>WARNING:</b> Polly started as a research project and larger parts of it are
-  still open research projects. Even though we aim for a robust, production
-  quality implementation, not all parts of Polly are there yet. We invite
-  you to contribute - both as industry collaborator, who may want to use parts
-  of Polly in production, as well as researcher, who is more interested in using
-  his expertise to work on some of the open research projects.
-  </p>
 
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