Fix build warnings in third_party/android_data_chart.

third_party/android_data_chart/java/src/org/chromium/third_party/android/datausagechart/InvertedChartAxis.java

Index: third_party/android_data_chart/java/src/org/chromium/third_party/android/datausagechart/InvertedChartAxis.java
diff --git a/third_party/android_data_chart/java/src/org/chromium/third_party/android/datausagechart/InvertedChartAxis.java b/third_party/android_data_chart/java/src/org/chromium/third_party/android/datausagechart/InvertedChartAxis.java
index 287a63ad723319fcabd5d5038925d3ea238c9cf0..782935f5f42df9d1b3c9c118ff028b6236ef7210 100644
--- a/third_party/android_data_chart/java/src/org/chromium/third_party/android/datausagechart/InvertedChartAxis.java
+++ b/third_party/android_data_chart/java/src/org/chromium/third_party/android/datausagechart/InvertedChartAxis.java
@@ -58,15 +58,6 @@ public class InvertedChartAxis implements ChartAxis {
     }
 
     @Override
-    public float[] getTickPoints() {
-        final float[] points = mWrapped.getTickPoints();
-        for (int i = 0; i < points.length; i++) {
-            points[i] = mSize - points[i];
-        }
-        return points;
-    }
-
-    @Override
     public int shouldAdjustAxis(long value) {
         return mWrapped.shouldAdjustAxis(value);
     }