How can you remove an index in MongoDB?

In MongoDB, you can delete an index using the db.collection.dropIndex() method. By specifying the index’s name or key, you can remove that index. An example is shown below:

db.collection.dropIndex("index_name");

You can use the following method to delete all indexes in a set.

db.collection.dropIndexes();

Please be cautious when deleting indexes, as it may cause a decrease in performance or a decrease in query efficiency.