By David Milliken LONDON (Reuters) – Britain’s government intends to make it illegal to encourage others to harm themselves online and will fine social media companies that fail to remove such material, as part of a revamp of legislation governing online behaviour. Promoting suicide is already illegal, but Britain’s digital, culture, media and sport ministry said in a statement that it now wanted to require social media firms to block a wider range of content. “Social media firms can no longer remain silent bystanders … and they’ll face fines for allowing this abusive and destructive behavio…