pubsub: skip TestIntegration_CancelReceive
pubsub: skip TestIntegration_CancelReceive

Updates #1666

Change-Id: I29594a8675d1edc417c9b770d40009a0fdc24784
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/48472
Reviewed-by: Jean de Klerk <605b93664484fed1e671a07bff68da39e73d0174@google.com>

googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go