Remove all public mention of RS graphics from docs.

Change-Id: Ie43b5fb0353149aa9af433b6f5c5141349388ea0
diff --git a/graphics/java/android/renderscript/Program.java b/graphics/java/android/renderscript/Program.java
index d9f64c6..9bd103e 100644
--- a/graphics/java/android/renderscript/Program.java
+++ b/graphics/java/android/renderscript/Program.java
@@ -26,6 +26,7 @@
 
 
 /**
+ * @hide
  *
  * Program is a base class for all the objects that modify
  * various stages of the graphics pipeline