Lint error fixed

Author: arunsureshkumar

graphene_mongo/converter.py

@@ -88,7 +88,6 @@ def convert_point_to_field(field, registry=None):
                           required=field.required)
 
 
-
 @convert_mongoengine_field.register(mongoengine.PolygonField)
 def convert_polygon_to_field(field, registry=None):
     return graphene.Field(advanced_types.PolygonFieldType, description=get_field_description(field, registry),
@@ -107,7 +106,6 @@ def convert_file_to_field(field, registry=None):
                           required=field.required)
 
 
-
 @convert_mongoengine_field.register(mongoengine.ListField)
 @convert_mongoengine_field.register(mongoengine.EmbeddedDocumentListField)
 def convert_field_to_list(field, registry=None):