kuri/api/android/kuri.api is an orphaned snapshot no task regenerates or checks

[OmarAlJarrah]

kuri/api/android/kuri.api is a committed binary-compatibility-validator snapshot, but nothing in the current Gradle setup regenerates or validates it: apiDump/apiCheck only run the jvm and klib (merged native) variants — there's no android*Api* task. It looks like it stopped being wired up around PR #54 and has been silently drifting from the real commonMain public API ever since (most recently, it's missing the ValidationError.INVALID_CREDENTIALS entry added in a recent fix).

Since nothing enforces it, this file currently just sits there as a misleading artifact for anyone who reads it expecting it to reflect the Android target's actual API surface.

Two options, either is fine:

1. Delete it, since nothing maintains it and a stale snapshot is worse than no snapshot.
2. Wire the Android target into apiDump/apiCheck so it's regenerated and validated like jvm/klib are.