remove useless change

Signed-off-by: xinyual <xinyual@amazon.com>

Author: xinyual

core/src/main/java/org/opensearch/sql/ast/AbstractNodeVisitor.java

@@ -22,7 +22,6 @@
 import org.opensearch.sql.ast.expression.HighlightFunction;
 import org.opensearch.sql.ast.expression.In;
 import org.opensearch.sql.ast.expression.Interval;
-import org.opensearch.sql.ast.expression.LambdaFunction;
 import org.opensearch.sql.ast.expression.Let;
 import org.opensearch.sql.ast.expression.Literal;
 import org.opensearch.sql.ast.expression.Map;
@@ -229,10 +228,6 @@ public T visitLet(Let node, C context) {
     return visitChildren(node, context);
   }
 
-  public T visitLambdaFunction(LambdaFunction node, C context) {
-    return visitChildren(node, context);
-  }
-
   public T visitSort(Sort node, C context) {
     return visitChildren(node, context);
   }

core/src/main/java/org/opensearch/sql/calcite/CalcitePlanContext.java

@@ -8,16 +8,13 @@
 import static org.opensearch.sql.calcite.utils.OpenSearchTypeFactory.TYPE_FACTORY;
 
 import java.sql.Connection;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 import java.util.Optional;
 import java.util.Stack;
 import java.util.function.BiFunction;
 import lombok.Getter;
 import lombok.Setter;
 import org.apache.calcite.rex.RexCorrelVariable;
-import org.apache.calcite.rex.RexLambdaRef;
 import org.apache.calcite.rex.RexNode;
 import org.apache.calcite.tools.FrameworkConfig;
 import org.apache.calcite.tools.RelBuilder;
@@ -34,7 +31,6 @@ public class CalcitePlanContext {
   public final ExtendedRexBuilder rexBuilder;
   public final FunctionProperties functionProperties;
   public final QueryType queryType;
-  @Getter public Map<String, RexLambdaRef> temparolInputmap;
 
   @Getter @Setter private boolean isResolvingJoinCondition = false;
   @Getter @Setter private boolean isResolvingSubquery = false;
@@ -57,11 +53,6 @@ private CalcitePlanContext(FrameworkConfig config, QueryType queryType) {
     this.relBuilder = CalciteToolsHelper.create(config, TYPE_FACTORY, connection);
     this.rexBuilder = new ExtendedRexBuilder(relBuilder.getRexBuilder());
     this.functionProperties = new FunctionProperties(QueryType.PPL);
-    this.temparolInputmap = new HashMap<>();
-  }
-
-  public void putTemparolInputmap(String name, RexLambdaRef input) {
-    this.temparolInputmap.put(name, input);
   }
 
   public RexNode resolveJoinCondition(

core/src/main/java/org/opensearch/sql/calcite/CalciteRexNodeVisitor.java

@@ -41,7 +41,6 @@
 import org.opensearch.sql.ast.expression.Function;
 import org.opensearch.sql.ast.expression.In;
 import org.opensearch.sql.ast.expression.Interval;
-import org.opensearch.sql.ast.expression.LambdaFunction;
 import org.opensearch.sql.ast.expression.Let;
 import org.opensearch.sql.ast.expression.Literal;
 import org.opensearch.sql.ast.expression.Not;
@@ -340,28 +339,6 @@ public RexNode visitLet(Let node, CalcitePlanContext context) {
     return context.relBuilder.alias(expr, node.getVar().getField().toString());
   }
 
-  @Override
-  public RexNode visitLambdaFunction(LambdaFunction node, CalcitePlanContext context) {
-    List<QualifiedName> names = node.getFuncArgs();
-    List<RexLambdaRef> args = new ArrayList<>();
-    for (int i = 0; i < names.size(); i++) {
-      context.putTemparolInputmap(
-          names.get(i).toString(),
-          new RexLambdaRef(
-              i,
-              names.get(i).toString(),
-              context.rexBuilder.getTypeFactory().createSqlType(SqlTypeName.ANY)));
-      args.add(
-          new RexLambdaRef(
-              i,
-              names.get(i).toString(),
-              context.rexBuilder.getTypeFactory().createSqlType(SqlTypeName.ANY)));
-    }
-    RexNode body = node.getFunction().accept(this, context);
-    RexNode lambdaNode = context.rexBuilder.makeLambdaCall(body, args);
-    return lambdaNode;
-  }
-
   @Override
   public RexNode visitFunction(Function node, CalcitePlanContext context) {
     List<RexNode> arguments =