Dropped index_auto_choose_mode flag from local-ydb config with env YDB_EXPERIMENTAL_P=1 (#26129)

Author: asmyasnikov

ydb/tests/library/harness/kikimr_config.py

@@ -477,7 +477,6 @@ def __init__(
 
         if pg_compatible_expirement:
             self.yaml_config["table_service_config"]["enable_ast_cache"] = True
-            self.yaml_config["table_service_config"]["index_auto_choose_mode"] = 'max_used_prefix'
             self.yaml_config["feature_flags"]['enable_temp_tables'] = True
             self.yaml_config["feature_flags"]['enable_table_pg_types'] = True
             self.yaml_config['feature_flags']['enable_pg_syntax'] = True