Remove all public mention of RS graphics from docs.

Change-Id: Ie43b5fb0353149aa9af433b6f5c5141349388ea0
diff --git a/graphics/java/android/renderscript/ProgramFragment.java b/graphics/java/android/renderscript/ProgramFragment.java
index 69968ac..dd0f9f5 100644
--- a/graphics/java/android/renderscript/ProgramFragment.java
+++ b/graphics/java/android/renderscript/ProgramFragment.java
@@ -21,6 +21,7 @@
 
 
 /**
+ * @hide
  * @deprecated in API 16
  * <p>The Renderscript fragment program, also known as fragment shader is responsible
  * for manipulating pixel data in a user defined way. It's constructed from a GLSL