Remove VNDK definition(s)

As of VNDK deprecation, any libraries that defines vndk is no longer
valid anymore. This change removes all VNDK definition(s) from modules
which was VNDK.

Bug: 328994089
Test: AOSP CF build succeeded
Change-Id: I934793dc108dee2dfb75a376b85a38aa4b1d8307
diff --git a/Android.bp b/Android.bp
index 9ca75f9..5b1b789 100644
--- a/Android.bp
+++ b/Android.bp
@@ -32,9 +32,6 @@
 cc_library {
   name: "libcn-cbor",
   vendor_available: true,
-  vndk: {
-      enabled: true,
-  },
   srcs: [
     "src/cn-cbor.c",
     "src/cn-create.c",