修复图层类型识别和获取图层要素数量bug

@@ -40,7 +40,6 @@ class Api(ApiTemplate):
                 tables = Table.query.order_by(Table.update_time.desc(),Table.name)
             else:
                 tables = Table.query.order_by(Table.name)
-    
             if database_guid:
                 tables = tables.filter_by(database_guid=database_guid)
             if catalog_guid: