def remove(name)
      begin
        github.api.remove_label(repo, number, name)
      rescue Octokit::Error => e
        puts "Error message: \"#{name}\" label is not existing."
        puts e
      end
    end
def remove(name)
      begin
        github.api.remove_label(repo, number, name)
      rescue Octokit::Error => e
        puts "Error message: \"#{name}\" label is not existing."
        puts e
      end
    end
Remove label from PR.
 @param   [String] name
          Remove label name.
 @return  [void]