Bring back the implementation for PtyClear when using conpty.dll

[Tyriar]

node-pty/src/win/conpty.cc

Lines 478 to 507 in cb94da7

	static Napi::Value PtyClear(const Napi::CallbackInfo& info) {
	Napi::Env env(info.Env());
	Napi::HandleScope scope(env);
	if (info.Length() != 1 ||
	!info[0].IsNumber()) {
	throw Napi::Error::New(env, "Usage: pty.clear(id)");
	}
	// int id = info[0].As<Napi::Number>().Int32Value();
	// const pty_baton* handle = get_pty_baton(id);
	// if (handle != nullptr) {
	// HANDLE hLibrary = LoadLibraryExW(L"kernel32.dll", 0, 0);
	// bool fLoadedDll = hLibrary != nullptr;
	// if (fLoadedDll)
	// {
	// PFNCLEARPSEUDOCONSOLE const pfnClearPseudoConsole = (PFNCLEARPSEUDOCONSOLE)GetProcAddress(
	// (HMODULE)hLibrary,
	// useConptyDll ? "ConptyClearPseudoConsole" : "ClearPseudoConsole");
	// if (pfnClearPseudoConsole)
	// {
	// pfnClearPseudoConsole(handle->hpc);
	// }
	// }
	// }
	return env.Undefined();
	}