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As of VNDK deprecation, any libraries that defines vndk is no longer
valid anymore.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. Any former VNDK-SP libraries will be marked as double-loadable,
so it can keep be able to be referenced by LLNDK libraries.

Bug: 328994089
Test: AOSP CF build succeeded
Change-Id: Ib71b6529508c5ed60aa2df2171d324a01330096d
diff --git a/Android.bp b/Android.bp
index 6806659..e490e72 100644
--- a/Android.bp
+++ b/Android.bp
@@ -7,10 +7,7 @@
     vendor_available: true,
     product_available: true,
     recovery_available: true,
-    vndk: {
-        enabled: true,
-        support_system_process: true,
-    },
+    double_loadable: true,
     srcs: ["ion.c"],
     shared_libs: ["liblog"],
     local_include_dirs: [