Some files do not need to be copied when building tor-expert-bundle

When building tor-expert-bundle, AndroidManifest.xml is copied in all platforms, we could enable it only for Android.

When building tor-expert-bundle-aar, the Android Toolchain is also copied, but I don't think we actually need it (we run unzip and jar).

Maybe we could even drop the container (jar might be not reproducible, since it contains (Debian) in META-INF/MANIFEST.MF, but maybe that file doesn't need to be created, and at that point we could use zip instead).