From 27140d2342c871719d2ba529137fb00462fbac97 Mon Sep 17 00:00:00 2001
From: Yongting You <2010youy01@gmail.com>
Date: Thu, 29 Feb 2024 17:10:54 +0800
Subject: [PATCH] clippy

---
 datafusion/functions/src/math/abs.rs  | 2 --
 datafusion/functions/src/math/acos.rs | 6 ++----
 datafusion/functions/src/math/nans.rs | 8 +++-----
 3 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/datafusion/functions/src/math/abs.rs b/datafusion/functions/src/math/abs.rs
index 6b56e69ffea4..8aa48460ff69 100644
--- a/datafusion/functions/src/math/abs.rs
+++ b/datafusion/functions/src/math/abs.rs
@@ -24,10 +24,8 @@ use arrow::array::Int32Array;
 use arrow::array::Int64Array;
 use arrow::array::Int8Array;
 use arrow::datatypes::DataType;
-use datafusion_common::plan_datafusion_err;
 use datafusion_common::{exec_err, not_impl_err};
 use datafusion_common::{DataFusionError, Result};
-use datafusion_expr::utils;
 use datafusion_expr::ColumnarValue;
 
 use arrow::array::{ArrayRef, Float32Array, Float64Array};
diff --git a/datafusion/functions/src/math/acos.rs b/datafusion/functions/src/math/acos.rs
index 1bc12dbd8d7f..f6a440beec0a 100644
--- a/datafusion/functions/src/math/acos.rs
+++ b/datafusion/functions/src/math/acos.rs
@@ -19,11 +19,9 @@
 
 use arrow::array::{ArrayRef, Float32Array, Float64Array};
 use arrow::datatypes::DataType;
-use datafusion_common::{exec_err, plan_datafusion_err, DataFusionError, Result};
+use datafusion_common::{exec_err, DataFusionError, Result};
 use datafusion_expr::ColumnarValue;
-use datafusion_expr::{
-    utils::generate_signature_error_msg, ScalarUDFImpl, Signature, Volatility,
-};
+use datafusion_expr::{ScalarUDFImpl, Signature, Volatility};
 use std::any::Any;
 use std::sync::Arc;
 
diff --git a/datafusion/functions/src/math/nans.rs b/datafusion/functions/src/math/nans.rs
index 77e102bb5c0d..3f3d7d197c33 100644
--- a/datafusion/functions/src/math/nans.rs
+++ b/datafusion/functions/src/math/nans.rs
@@ -18,14 +18,12 @@
 //! Math function: `isnan()`.
 
 use arrow::datatypes::DataType;
-use datafusion_common::{exec_err, plan_datafusion_err, DataFusionError, Result};
+use datafusion_common::{exec_err, DataFusionError, Result};
 use datafusion_expr::ColumnarValue;
 
 use arrow::array::{ArrayRef, BooleanArray, Float32Array, Float64Array};
 use datafusion_expr::TypeSignature::*;
-use datafusion_expr::{
-    utils::generate_signature_error_msg, ScalarUDFImpl, Signature, Volatility,
-};
+use datafusion_expr::{ScalarUDFImpl, Signature, Volatility};
 use std::any::Any;
 use std::sync::Arc;
 
@@ -58,7 +56,7 @@ impl ScalarUDFImpl for IsNanFunc {
         &self.signature
     }
 
-    fn return_type(&self, arg_types: &[DataType]) -> Result<DataType> {
+    fn return_type(&self, _arg_types: &[DataType]) -> Result<DataType> {
         Ok(DataType::Boolean)
     }