def remove_stack(stack_id)
      current_stacks = MultiJson.load(cached_stacks)
      logger.info "Attempting to remove stack from internal cache (#{stack_id})"
      cache.locked_action(:stacks_lock) do
        val = current_stacks.delete(stack_id)
        logger.info "Successfully removed stack from internal cache (#{stack_id})"
        cache[:stacks].value = MultiJson.dump(current_stacks)
        !!val
      end
    end
def remove_stack(stack_id)
      current_stacks = MultiJson.load(cached_stacks)
      logger.info "Attempting to remove stack from internal cache (#{stack_id})"
      cache.locked_action(:stacks_lock) do
        val = current_stacks.delete(stack_id)
        logger.info "Successfully removed stack from internal cache (#{stack_id})"
        cache[:stacks].value = MultiJson.dump(current_stacks)
        !!val
      end
    end
Remove stack from the cache

 @param stack_id [String]
 @return [TrueClass, FalseClass]