NEW YORK (Reuters) - Oil prices opened about 1% lower on Sunday as a persistent glut continued to weigh on prices and the coronavirus pandemic eroded global oil demand even as some governments began to ease lockdowns. Brent crude was down 29 cents, or 0.9%, at $30.68 a barrel by 6:05 p.m. ET (2205 GMT) while U.S. oil fell 26 cents, or 1.1%, to $24.48 a barrel. Global oil demand has plummeted by about 30% as the coronavirus pandemic curtailed movement across the world."Oil companies are..