Remove unused methods from DebuggerWithSymbolTables

Author: hazefully

fdb-record-layer-core/src/main/java/com/apple/foundationdb/record/query/plan/cascades/debug/DebuggerWithSymbolTables.java

@@ -21,7 +21,6 @@
 package com.apple.foundationdb.record.query.plan.cascades.debug;
 
 import com.apple.foundationdb.record.logging.KeyValueLogMessage;
-import com.apple.foundationdb.record.query.combinatorics.TopologicalSort;
 import com.apple.foundationdb.record.query.plan.cascades.CascadesRuleCall;
 import com.apple.foundationdb.record.query.plan.cascades.PlanContext;
 import com.apple.foundationdb.record.query.plan.cascades.Quantifier;
@@ -53,12 +52,9 @@
 import java.util.Objects;
 import java.util.Optional;
 import java.util.concurrent.TimeUnit;
-import java.util.function.Consumer;
 import java.util.function.IntUnaryOperator;
 import java.util.stream.Collectors;
 
-import static com.apple.foundationdb.record.query.plan.cascades.properties.ReferencesAndDependenciesProperty.referencesAndDependencies;
-
 /**
  * <p>
  * Implementation of a debugger that maintains symbol tables for easier human consumption e.g. in test cases and/or
@@ -176,14 +172,6 @@ public void onQuery(@Nonnull final String recordQuery, @Nonnull final PlanContex
         logQuery();
     }
 
-    void restartState() {
-        eventStateStack.pop();
-        eventStateStack.push(EventState.copyOf(getCurrentEventState()));
-
-        symbolTablesStack.pop();
-        symbolTablesStack.push(SymbolTables.copyOf(getCurrentSymbolState()));
-    }
-
     @Override
     @SuppressWarnings("PMD.GuardLogStatement") // false positive
     public void onEvent(final Event event) {
@@ -406,24 +394,6 @@ public static DebuggerWithSymbolTables withPrerecordedEvents(@Nonnull final Stri
         return new DebuggerWithSymbolTables(true, true, fileName);
     }
 
-    public static void printForEachExpression(@Nonnull final Reference root) {
-        forEachExpression(root, expression -> {
-            System.out.println("expression: " +
-                    SymbolDebugger.mapDebugger(debugger -> debugger.nameForObject(expression)).orElseThrow() + "; " +
-                    "hashCodeWithoutChildren: " + expression.hashCodeWithoutChildren() + "explain: " + expression);
-        });
-    }
-
-    public static void forEachExpression(@Nonnull final Reference root, @Nonnull final Consumer<RelationalExpression> consumer) {
-        final var references = referencesAndDependencies().evaluate(root);
-        final var referenceList = TopologicalSort.anyTopologicalOrderPermutation(references).orElseThrow();
-        for (final var reference : referenceList) {
-            for (final var member : reference.getAllMemberExpressions()) {
-                consumer.accept(member);
-            }
-        }
-    }
-
     @FunctionalInterface
     private interface SupplierWithException<T> {