PYTHON-2292 Fix failing doctest due to UuidRepresentation (#458)

PYTHON-2277 Remove UuidRepresentation DeprecationWarning

Author: prashantmital

bson/codec_options.py

@@ -252,12 +252,6 @@ def __new__(cls, document_class=dict,
         if not isinstance(tz_aware, bool):
             raise TypeError("tz_aware must be True or False")
         if uuid_representation is None:
-            warnings.warn(
-                "Starting in PyMongo 4.0, the default uuidRepresentation "
-                "will be changed to 'unspecified'. Applications will need to "
-                "explicitly set 'uuidRepresentation=pythonLegacy' in the "
-                "connection string to preserve current behavior.",
-                DeprecationWarning, stacklevel=2)
             uuid_representation = UuidRepresentation.PYTHON_LEGACY
         elif uuid_representation not in ALL_UUID_REPRESENTATIONS:
             raise ValueError("uuid_representation must be a value "

doc/faq.rst

@@ -237,7 +237,7 @@ collection, configured to use :class:`~bson.son.SON` instead of dict:
   >>> opts
   CodecOptions(document_class=<class 'bson.son.SON'>,
                tz_aware=False,
-               uuid_representation=PYTHON_LEGACY,
+               uuid_representation=UuidRepresentation.PYTHON_LEGACY,
                unicode_decode_error_handler='strict',
                tzinfo=None, type_registry=TypeRegistry(type_codecs=[],
                                                        fallback_encoder=None))