Remove 8xGPU XLA tests.  They are not supported yet. (#7435)
Remove 8xGPU XLA tests.  They are not supported yet. (#7435)


tombstone/models,tombstone/models,alexgorban/models,alexgorban/models,tombstone/models,alexgorban/models,alexgorban/models,alexgorban/models,tombstone/models,tombstone/models,tombstone/models