msvc: remove some unneeded warning disable

this was either for libusb.h or some now-removed code.

Source/Core/Core/HW/WiimoteCommon/WiimoteHid.h

@@ -59,12 +59,6 @@ private:
   InterruptCallbackType m_callback;
 };
 
-#ifdef _MSC_VER
-#pragma warning(push)
-// Disable warning for zero-sized array:
-#pragma warning(disable : 4200)
-#endif
-
 #pragma pack(push, 1)
 
 template <typename T>
@@ -84,8 +78,4 @@ struct TypedInputData
 
 #pragma pack(pop)
 
-#ifdef _MSC_VER
-#pragma warning(pop)
-#endif
-
 }  // namespace WiimoteCommon