Reverted document.delete auto gridfs delete

mongoengine/base.py

@@ -618,10 +618,6 @@ class DocumentMetaclass(type):
                     raise InvalidDocumentError("Reverse delete rules are not supported for EmbeddedDocuments (field: %s)" % field.name)
                 f.document_type.register_delete_rule(new_class, field.name, delete_rule)
 
-            proxy_class = getattr(field, 'proxy_class', None)
-            if proxy_class is not None:
-                new_class.register_proxy_field(field.name, proxy_class)
-
             if field.name and hasattr(Document, field.name) and EmbeddedDocument not in new_class.mro():
                 raise InvalidDocumentError("%s is a document method and not a valid field name" % field.name)
 
@@ -723,7 +719,6 @@ class TopLevelDocumentMetaclass(DocumentMetaclass):
             'index_opts': {},
             'queryset_class': QuerySet,
             'delete_rules': {},
-            'proxy_fields': {},
             'allow_inheritance': True
         }
 

mongoengine/document.py

@@ -278,11 +278,6 @@ class Document(BaseDocument):
         signals.pre_delete.send(self.__class__, document=self)
 
         try:
-            for field_name in self._meta['proxy_fields']:
-                proxy_class = self._meta['proxy_fields'][field_name]
-                if hasattr(proxy_class, 'delete'):
-                    proxy = getattr(self, field_name)
-                    proxy.delete()
             self.__class__.objects(pk=self.pk).delete(safe=safe)
         except pymongo.errors.OperationFailure, err:
             message = u'Could not delete document (%s)' % err.message
@@ -347,13 +342,6 @@ class Document(BaseDocument):
         """
         cls._meta['delete_rules'][(document_cls, field_name)] = rule
 
-    @classmethod
-    def register_proxy_field(cls, field_name, proxy_class):
-        """This method registers fields with proxy classes to delete them when
-        removing this object.
-        """
-        cls._meta['proxy_fields'][field_name] = proxy_class
-
     @classmethod
     def drop_collection(cls):
         """Drops the entire collection associated with this