WASHINGTON — A deal to end the war between the US and Iran is expected to be signed within the next 48 hours, possibly “remotely,” and may not necessarily require a formal ceremony in Switzerland on Friday, a senior US official told The Post. “There’s talk right now about maybe just having it signed remotely, and then either way we’re meeting Friday,” the official said. “We’re going to be going through the details.” The Memorandum of Understanding is seen as a largely “political document” and a