# File lib/new_relic/agent/configuration/manager.rb, line 58
        def remove_config(source)
          case source
          when HighSecuritySource then @high_security_source = nil
          when EnvironmentSource  then @environment_source   = nil
          when ServerSource       then @server_source        = nil
          when ManualSource       then @manual_source        = nil
          when YamlSource         then @yaml_source          = nil
          when DefaultSource      then @default_source       = nil
          else
            @configs_for_testing.delete_if {|src,lvl| src == source}
          end

          reset_cache
          invoke_callbacks(:remove, source)
          log_config(:remove, source)
        end