VEVEY, Switzerland (Reuters) - Food giant Nestle expects growth to accelerate over the next two years towards its mid-single digit organic growth target, initially set for 2020, after it hit a four-year high at 3.5% and profitability improved in 2019. Like other large food companies such as Unilever , Nestle has been working hard to streamline its diverse portfolio in keeping with changing consumer tastes and growing demand for healthier and more environmentally friendly produce. "(We see..