Remove unused queryLevel fields

h2/src/main/org/h2/expression/condition/ConditionIn.java

@@ -31,7 +31,6 @@ public class ConditionIn extends Condition {
     private final Database database;
     private Expression left;
     private final ArrayList<Expression> valueList;
-    private int queryLevel;
 
     /**
      * Create a new IN(..) condition.
@@ -86,7 +85,6 @@ public class ConditionIn extends Condition {
         for (Expression e : valueList) {
             e.mapColumns(resolver, level, state);
         }
-        this.queryLevel = Math.max(level, this.queryLevel);
     }
 
     @Override

h2/src/main/org/h2/expression/condition/ConditionInConstantSet.java

@@ -33,7 +33,6 @@ import org.h2.value.ValueNull;
 public class ConditionInConstantSet extends Condition {
 
     private Expression left;
-    private int queryLevel;
     private final ArrayList<Expression> valueList;
     private final TreeSet<Value> valueSet;
     private final int type;
@@ -87,7 +86,6 @@ public class ConditionInConstantSet extends Condition {
     @Override
     public void mapColumns(ColumnResolver resolver, int level, int state) {
         left.mapColumns(resolver, level, state);
-        this.queryLevel = Math.max(level, this.queryLevel);
     }
 
     @Override

h2/src/main/org/h2/expression/condition/ConditionInSelect.java

@@ -33,7 +33,6 @@ public class ConditionInSelect extends Condition {
     private final Query query;
     private final boolean all;
     private final int compareType;
-    private int queryLevel;
 
     public ConditionInSelect(Database database, Expression left, Query query,
             boolean all, int compareType) {
@@ -110,7 +109,6 @@ public class ConditionInSelect extends Condition {
     public void mapColumns(ColumnResolver resolver, int level, int state) {
         left.mapColumns(resolver, level, state);
         query.mapColumns(resolver, level + 1);
-        this.queryLevel = Math.max(level, this.queryLevel);
     }
 
     @Override