Delete BinaryTreeTraverserBenchmark.

RELNOTES=n/a
PiperOrigin-RevId: 810518382

Author: java-team-github-bot

android/guava-tests/benchmark/com/google/common/collect/BinaryTreeTraverserBenchmark.java

@@ -29,10 +29,12 @@
 /**
  * Tests for {@code TreeTraverser}.
  *
+ * @deprecated Use {@link com.google.common.graph.Traverser} instead.
  * @author Louis Wasserman
  */
 @GwtCompatible
 @NullMarked
+@Deprecated // Use com.google.common.graph.Traverser instead.
 public class TreeTraverserTest extends TestCase {
   private static class Node {
     final char value;

android/guava-tests/test/com/google/common/collect/TreeTraverserTest.java

@@ -69,13 +69,14 @@
  *     their equivalent on the result of {@code Traverser.forTree(tree)} where {@code tree}
  *     implements {@code SuccessorsFunction}, which has a similar API as {@link #children} or can be
  *     the same lambda function as passed into {@link #using(Function)}.
- *     <p>This class is scheduled to be removed in October 2019.
  */
-// TODO(b/68134636): Remove by 2019-10
+// This class is now only available externally for backwards compatibility; it should not be used
+// internally (hence the package-private visibility and @Deprecated annotation).
 @Deprecated
 @Beta
 @GwtCompatible
-public abstract class TreeTraverser<T> {
+public
+abstract class TreeTraverser<T> {
   /** Constructor for use by subclasses. */
   public TreeTraverser() {}
 

android/guava/src/com/google/common/collect/TreeTraverser.java

@@ -29,10 +29,12 @@
 /**
  * Tests for {@code TreeTraverser}.
  *
+ * @deprecated Use {@link com.google.common.graph.Traverser} instead.
  * @author Louis Wasserman
  */
 @GwtCompatible
 @NullMarked
+@Deprecated // Use com.google.common.graph.Traverser instead.
 public class TreeTraverserTest extends TestCase {
   private static class Node {
     final char value;