By Danielle Kate Wroe It’s always heartbreaking when you learn one of your favourite foods has been discontinued because the thought of never having that taste sensation pass your lips again is gutting – and Marmite fans were especially devastated to learn that Walkers Marmite crisps wouldn’t be produced again. Taking to X, formerly Twitter, people expressed “national outrage” when the manufacturer admitted that the packets of crisps would be being phased out, after being on sale for 20 years. The crisp brand said they were “really sorry to disappoint fans”, but the crisps were discontinued at…