Remove commented code

Author: nikic

ext/pdo/pdo_stmt.c

@@ -1091,17 +1091,6 @@ static int do_fetch(pdo_stmt_t *stmt, int do_bind, zval *return_value, enum pdo_
 							&val);
 						zval_ptr_dtor(&val);
 					} else {
-#ifdef MBO_0
-						php_unserialize_data_t var_hash;
-
-						PHP_VAR_UNSERIALIZE_INIT(var_hash);
-						if (php_var_unserialize(return_value, (const unsigned char**)&Z_STRVAL(val), Z_STRVAL(val)+Z_STRLEN(val), NULL) == FAILURE) {
-							pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "cannot unserialize data");
-							PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
-							return 0;
-						}
-						PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
-#endif
 						if (!ce->unserialize) {
 							zval_ptr_dtor(&val);
 							pdo_raise_impl_error(stmt->dbh, stmt, "HY000", "cannot unserialize class");