delete tail space (#9386)

Signed-off-by: tangruilin <[email protected]>

Author: Tangruilin

datafusion/functions/src/core/nvl2.rs

@@ -16,7 +16,7 @@
 // under the License.
 
 use arrow::datatypes::DataType;
-use datafusion_common::{internal_err, plan_datafusion_err, DataFusionError, Result};
+use datafusion_common::{internal_err, plan_datafusion_err, Result};
 use datafusion_expr::{utils, ColumnarValue, ScalarUDFImpl, Signature, Volatility};
 use arrow::compute::kernels::zip::zip;
 use arrow::compute::is_not_null;

datafusion/physical-expr/src/datetime_expressions.rs

@@ -516,8 +516,8 @@ pub fn make_current_time(
 /// # use datafusion::prelude::*;
 /// # use datafusion::error::Result;
 /// # use datafusion_common::ScalarValue::TimestampNanosecond;
-/// # use std::sync::Arc;        
-/// # use arrow_array::{Date32Array, RecordBatch, StringArray};             
+/// # use std::sync::Arc;
+/// # use arrow_array::{Date32Array, RecordBatch, StringArray};
 /// # use arrow_schema::{DataType, Field, Schema};
 /// # #[tokio::main]
 /// # async fn main() -> Result<()> {