DOCSP-43957-recommend-drop-and-recreate (#358)

* DOCSP-43957-recommend-drop-and-recreate

* DOCSP-43957-recommend-drop-and-recreate

* DOCSP-43957 Jeff comments

* DOCSP-43957 Jeff comments 2

* DOCSP-43957
tech edits

Author: ltran-mdb2

source/crud/delete.txt

@@ -51,6 +51,15 @@ To delete all documents from a collection, pass an empty
    more information and examples, see
    :method:`~db.collection.deleteMany()`.
 
+.. note::
+
+   If you want to delete all documents from a large collection, dropping
+   with the :method:`db.collection.drop` method. and recreating the
+   collection may have faster performance than deleting documents with
+   the :method:`db.collection.deleteMany()` method. When you recreate
+   the collection, you must also recreate any specified collection
+   parameters such as collection indexes.
+
 Delete All Documents that Match a Condition
 -------------------------------------------