AMSTERDAM, Feb 18 (Reuters) - Dutch chemicals group DSM NV on Wednesday reported an in line 35 percent decline in core profit and cancelled the remaining part of its share buyback, but maintained its 2008 dividend. Earnings before interest and tax (EBIT) from continued operations were 123 million euros ($156 million), compared with with the average forecast of 125 million euros from a Reuters survey of seven analysts. The company reported EBIT of 190 million euros in the same period in 2007.