We no longer need ARCHS, as we don't validate
We no longer need ARCHS, as we don't validate

The VersionsFetcher no longer fetches a download list for
a specified architecture, so we don't need an ARCHS constant
which enumerates the valid architectures.

crosswalk-project/DEPRECATED-crosswalk-apk-generator,crosswalk-project/DEPRECATED-crosswalk-apk-generator,crosswalk-project/DEPRECATED-crosswalk-apk-generator,crosswalk-project/DEPRECATED-crosswalk-apk-generator