By Ahmad Ghaddar and Noah Browning LONDON (Reuters) – Oil prices fell on Thursday amid profit-taking, but remained underpinned by tight supply as OPEC+ producers stuck to planned moderate output increases. Brent crude was down 73 cents, or 0.8%, to $88.74 a barrel at 1345 GMT, after rising 31 cents on Wednesday. U.S. West Texas Intermediate crude was down 84 cents, or 0.9%, at $87.42 a barrel, having gained 6 cents the previous day. “A risk off environment and a modestly stronger dollar are one driver weighing on crude prices,” said Giovanni Staunovo, commodity analyst at UBS. “The other is pr…