LONDON, July 26 (Reuters) - Goldman Sachs trimmed its U.S. economic growth forecast for remainder of the year on Monday, citing a slower recovery in the services sector. The Wall Street bank revised both Q3 and Q4 growth 1 percentage point lower, to 8.5% and 5.0% respectively. That left the 2021 growth forecast at 6.6% on a full-year basis. "We have long expected growth to peak in a mid-year boom fueled by vaccination and fiscal support," Jan Hatzius said on a note to clients. "But the subsequent deceleration now looks likely to be a bit sharper because the goods-to-services rotation is likely to be less seamless."