Dubai's Emaar Properties says to split with India JV partner

* Dubai developer to split Emaar MGF Land Limited JV - statement * India JV struggled in recent years * Delays to projects, failed IPO, among issues (Adds context) By Hadeel Al Sayegh and Aditi Shah DUBAI/DELHI, April 13 (Reuters) - Dubai's Emaar Properties plans to split with its Indian joint venture partner through a demerger process, the emirate's biggest property developer said on Wednesday. The move ends a decade-long relationship between Emaar and MGF Developments through Emaar MGF Land Li