Database
[{_id:"121as","book_num":"12a","book_name":"lotr","info":[{"borrowerAddress":["NY","Delhi"]},{"borrowerAddress":["SI","Ghana"]}]},{_id:"121a","book_num":"12a","book_name":"lotr1","info":[{"borrowerAddress":["NY","Delhi"]},{"borrowerAddress":["SI","Ghana"]}]}]
Query
db.collection.update({"book_name":"lotr","info.borrowerAddress":"NY"},{$pull:{"info.$[].borrowerAddress":"NY"}},{multi:true})