review fix 1, remove has_directories

Author: kabulov kozim

ydb_sqlalchemy/sqlalchemy/__init__.py

@@ -589,7 +589,6 @@ def __init__(
         json_serializer=None,
         json_deserializer=None,
         _add_declare_for_yql_stmt_vars=False,
-        has_directories=False,
         **kwargs,
     ):
         super().__init__(**kwargs)
@@ -599,7 +598,6 @@ def __init__(
         # NOTE: _add_declare_for_yql_stmt_vars is temporary and is soon to be removed.
         # no need in declare in yql statement here since ydb 24-1
         self._add_declare_for_yql_stmt_vars = _add_declare_for_yql_stmt_vars
-        self._has_directories = has_directories
 
     def _describe_table(self, connection, table_name, schema=None):
         if schema is not None:
@@ -682,9 +680,7 @@ def do_commit(self, dbapi_connection: dbapi.Connection) -> None:
         dbapi_connection.commit()
 
     def _fix_variable_name(self, variable):
-        if self._has_directories:
-            return variable.replace("/", "_")
-        return variable
+        return variable.replace("/", "__")
 
     def _format_variables(
         self,