diff --git a/gluten-core/src/main/scala/io/glutenproject/execution/BasicPhysicalOperatorTransformer.scala b/gluten-core/src/main/scala/io/glutenproject/execution/BasicPhysicalOperatorTransformer.scala
index 7c8e496eb3bf6..f17df39bc6094 100644
--- a/gluten-core/src/main/scala/io/glutenproject/execution/BasicPhysicalOperatorTransformer.scala
+++ b/gluten-core/src/main/scala/io/glutenproject/execution/BasicPhysicalOperatorTransformer.scala
@@ -48,7 +48,6 @@ abstract class FilterExecTransformerBase(val cond: Expression, val input: SparkP
   extends UnaryExecNode
   with TransformSupport
   with PredicateHelper
-  with AliasAwareOutputPartitioning
   with Logging {
 
   // Note: "metrics" is made transient to avoid sending driver-side metrics to tasks.
@@ -130,8 +129,6 @@ abstract class FilterExecTransformerBase(val cond: Expression, val input: SparkP
     }
   }
 
-  override protected def outputExpressions: Seq[NamedExpression] = output
-
   override def output: Seq[Attribute] = {
     child.output.map {
       a =>
@@ -220,7 +217,6 @@ case class ProjectExecTransformer private (projectList: Seq[NamedExpression], ch
   extends UnaryExecNode
   with TransformSupport
   with PredicateHelper
-  with AliasAwareOutputPartitioning
   with Logging {
 
   // Note: "metrics" is made transient to avoid sending driver-side metrics to tasks.
@@ -358,9 +354,7 @@ case class ProjectExecTransformer private (projectList: Seq[NamedExpression], ch
   override def doExecuteColumnar(): RDD[ColumnarBatch] = {
     throw new UnsupportedOperationException(s"This operator doesn't support doExecuteColumnar().")
   }
-
-  override protected def outputExpressions: Seq[NamedExpression] = projectList
-
+  
   override protected def doExecute()
       : org.apache.spark.rdd.RDD[org.apache.spark.sql.catalyst.InternalRow] = {
     throw new UnsupportedOperationException(s"This operator doesn't support doExecute().")
diff --git a/shims/spark34/src/main/scala/org/apache/spark/sql/execution/AliasAwareOutputExpression.scala b/shims/spark34/src/main/scala/org/apache/spark/sql/execution/AliasAwareOutputExpression.scala
deleted file mode 100644
index 2a21af5980f22..0000000000000
--- a/shims/spark34/src/main/scala/org/apache/spark/sql/execution/AliasAwareOutputExpression.scala
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.spark.sql.execution
-
-import org.apache.spark.sql.catalyst.plans.AliasAwareOutputExpression
-
-/**
- * A trait that handles aliases in the `outputExpressions` to produce `outputPartitioning` that
- * satisfies distribution requirements.
- */
-trait AliasAwareOutputPartitioning extends AliasAwareOutputExpression {}