What would happen if the black hole at the center of our Galaxy disappeared?

At the center of our Galaxy lies a supermassive black hole — Sagittarius A*, with a mass of 4.3 million solar masses. It was discovered relatively recently due to observations of the movement of stars and other objects in the galactic center area. Similar to the Moon orbiting our planet or Earth orbiting the Sun, our entire Solar System orbits the center of the Milky Way. At first glance, the situation with the disappearance of the black hole from the center of the Galaxy seems similar to the disappearance of the Sun from our…