[Kernel] Use tables for export groups.

src/xenia/kernel/xboxkrnl/xboxkrnl_modules.cc

@@ -199,9 +199,8 @@ void ExRegisterTitleTerminateNotification_entry(
 DECLARE_XBOXKRNL_EXPORT1(ExRegisterTitleTerminateNotification, kModules,
                          kImplemented);
 
-void RegisterModuleExports(xe::cpu::ExportResolver* export_resolver,
-                           KernelState* kernel_state) {}
-
 }  // namespace xboxkrnl
 }  // namespace kernel
 }  // namespace xe
+
+DECLARE_XBOXKRNL_EMPTY_REGISTER_EXPORTS(Module);