Update Android.bp to reflect aosp/2763825

Test: Ran cargo2android. Treehugger.
Change-Id: I05afff305f499b8850dfe3c2e56e516b8fdf3fe7
diff --git a/Android.bp b/Android.bp
index 0f9466d..a7004bf 100644
--- a/Android.bp
+++ b/Android.bp
@@ -49,6 +49,4 @@
         "libquote",
         "libsyn",
     ],
-    product_available: true,
-    vendor_available: true,
 }