By Mark Kleinman Mark Kleinman is Sky News’ City Editor and the man who gets the Square Mile talking in his weekly City A.M. column. Today, he looks at Tate & Lyle’s , the Telegraph auction and a Staveley’s pitchside plays Tate & Lyle’s sweet deal isn’t just for tasteAnyone for a sweetener? It’s been years since Tate & Lyle owned the sugar business for which its brand was famous in British households. Now, its refocusing on the niche of ‘speciality food solutions’ is about to take a big leap forward. Last month’s £1.4bn acquisition of CP Kelco, a US-based peer, surprised the stock market and l…