Removing unused method indexOfValueByValue

The method was confusing and not used by anyone. Same functionality can
be implemented trivially in the client code.

Test: N/A

Bug: 35765468
Change-Id: Ia019088cd023c62d83760d9ebe883f7559a43375
diff --git a/core/java/android/util/SparseArray.java b/core/java/android/util/SparseArray.java
index c766660..b3400ef 100644
--- a/core/java/android/util/SparseArray.java
+++ b/core/java/android/util/SparseArray.java
@@ -363,6 +363,7 @@
      * and that multiple keys can map to the same value and this will
      * find only one of them.
      * <p>Note also that this method uses {@code equals} unlike {@code indexOfValue}.
+     * @hide
      */
     public int indexOfValueByValue(E value) {
         if (mGarbage) {