lib/operations/collection_ops.js
function deleteMany(coll, filter, options, callback) {
  options.single = false;

  removeDocuments(coll, filter, options, (err, r) => deleteCallback(err, r, callback));
}
function deleteMany(coll, filter, options, callback) {
  options.single = false;

  removeDocuments(coll, filter, options, (err, r) => deleteCallback(err, r, callback));
}
function deleteMany ( coll , filter , options , callback ) { options . single = false ; removeDocuments ( coll , filter , options , ( err , r ) => deleteCallback ( err , r , callback ) ) ; }
Delete multiple documents from the collection.

@method
@param {Collection} a Collection instance.
@param {object} filter The Filter used to select the documents to remove
@param {object} [options] Optional settings. See Collection.prototype.deleteMany for a list of options.
@param {Collection~deleteWriteOpCallback} [callback] The command result callback
Delete multiple documents from the collection .