(Reuters) -Oxford Cannabinoid Technologies said on Friday its third-largest investor has asked the British pharmaceutical company to hold a shareholder meeting to remove its chief executive officer and a majority of its board members. Former non-executive director Gavin Sathianathan, who serves as the top boss of U.S.-based private investment firm GHS Capital, has proposed resolutions to remove six of Oxford Cannabinoid’s directors including CEO John Lucas and Chair Julie Pomeroy. Sathianathan wants to appoint James Brodie, Richard Bedford and Richard Grethe to Oxford Cannabinoid’s board at th…