More Linux warnings fixes (remove default labels as needed):

- as per http://llvm.org/docs/CodingStandards.html#don-t-use-default-labels-in-fully-covered-switches-over-enumerations

Patch by Matt Kopec!

llvm-svn: 169633

lldb/source/Plugins/Process/POSIX/ProcessPOSIX.cpp

@@ -322,10 +322,6 @@ ProcessPOSIX::SendMessage(const ProcessMessage &message)
 
     switch (message.GetKind())
     {
-    default:
-        assert(false && "Unexpected process message!");
-        break;
-
     case ProcessMessage::eInvalidMessage:
         return;