How to remove products of development/staging site from live site?

If products of your development/staging site appear on live site, then you can remove them by following below steps

1. Login into Klevu Merchant Center (https://box.klevu.com) with the registered email id and password
2. Choose the appropriate store from the drop down at the top from which you want to remove test data                               
3. Go to Shop Info → Remove Data
4. Enter the starting URL of products (i.e. https://staging.mystore.com/ or  http://37.187.171.90/) which you want to delete from Klevu Search indices and click on Submit button                                                                                                             
5. If Klevu finds the records, it will show the number of records starting with the given URL                                                        
6. Click on Continue button and allow up to 15 minutes to remove the data from Klevu Search indices
7. Delete both the JS API key and REST API key from your development/staging environment. This step is very important to ensure synchronization is not happening from both the staging and production environments.