Rupert Murdoch’s News International, which plans to begin charging for online content, said Thursday it was to close its free London newspaper as part of cost-cutting measures. The Londonpaper, which employs 60 editorial staff, will cease publication within a month, according to a statement. “The strategy at News International over the past 18 months has been to streamline our operations and focus investment on our core titles,” James Murdoch, who heads his father’s Europe and Asia operations said