Fix clippy

# Building wheels and fs_util will be skipped. Delete if not intended.
[ci skip-build-wheels]

src/rust/engine/engine_pyo3/src/externs/interface.rs

@@ -28,6 +28,6 @@ impl PyExecutor {
   fn __new__(core_threads: usize, max_threads: usize) -> PyResult<Self> {
     task_executor::Executor::global(core_threads, max_threads)
       .map(|executor| PyExecutor { executor })
-      .map_err(|err| PyException::new_err(err))
+      .map_err(PyException::new_err)
   }
 }

src/rust/engine/engine_pyo3/src/externs/interface/testutil.rs

@@ -3,7 +3,7 @@
 
 use std::sync::Arc;
 
-use crate::externs::interface::PyExecutor;
+use super::PyExecutor;
 use parking_lot::Mutex;
 use pyo3::exceptions::PyAssertionError;
 use pyo3::prelude::*;