be a thing of the past : to describe something is no longer used because of the certain change; to be something that does not exist or happen any more
Examples:
1. With more and more people using digital cameras to take pictures; having photos developed at a photo center is becoming a thing of the past.
2. In this company, paper memos are a thing of the past; all information is distributed through the Internet.
3. The new tunnels allow drivers to go quickly through the mountains; driving along the base of the mountains will soon become a thing of the past.
Please click here to find more examples.
Replies
Waiting for a long time to have response from apart relatives by letters is a thing of the past since we have mobiles to call them whenever we want.