Remove dependencies on FloatMath

See frameworks/base commit 33253a4baa6279f81a73425b49dfb6abe5f5416e
for details.

Bug: https://code.google.com/p/android/issues/detail?id=36199
Change-Id: I01126788f34b9a464b873bc2fff03acedc43bb52

samples/ControllerSample/src/com/example/controllersample/GameView.java

@@ -448,7 +448,7 @@ public class GameView extends View implements InputDeviceListener {
     }
 
     private static float pythag(float x, float y) {
-        return (float) Math.sqrt(x * x + y * y);
+        return (float) Math.hypot(x, y);
     }
 
     private static int blend(float alpha, int from, int to) {