Don't Write OSD Messages to the titlebar

Turns out all OSD messages, every single one, are written to the titlebar. We've just never seen them because the FPS is in the title bar and it replaces it in a fraction of a second. This was only visible when saving savestates because it halts emulation for a moment while writing.

This is dumb, let's not do that anymore.

Source/Core/Core/Core.cpp

@@ -180,7 +180,6 @@ void DisplayMessage(std::string message, int time_in_ms)
   if (!std::all_of(message.begin(), message.end(), IsPrintableCharacter))
     return;
 
-  Host_UpdateTitle(message);
   OSD::AddMessage(std::move(message), time_in_ms);
 }