Updated alpha known problems.

llvm-svn: 24126

llvm/docs/ReleaseNotes.html

@@ -635,8 +635,6 @@ several programs in the LLVM test suite</a></li>
 <li>On 21164s, some rare FP arithmetic sequences which may trap do not have the
 appropriate nops inserted to ensure restartability.</li>
 
-<li>Due to the vararg problems, C++ exceptions do not work.  Small changes are required to the CFE (which break correctness in the exception handler) to compile the exception handling library (and thus the C++ standard library).</li>
-
 </ul>
 
 </div>