Update Android.bp to reflect aosp/2763825

Test: Ran cargo2android. Treehugger.
Change-Id: I477737abbcdff5b5e9e4ea4edd4982655fe35601
diff --git a/Android.bp b/Android.bp
index 208932d..010a3be 100644
--- a/Android.bp
+++ b/Android.bp
@@ -51,6 +51,4 @@
         "libquote",
     ],
     compile_multilib: "first",
-    product_available: true,
-    vendor_available: true,
 }