To prevent TooManyBuckets errors from failed acceptance testing.
Output from test sweepers:
```
$ go test ./aws -v -sweep=us-west-2 -sweep-run=aws_s3_bucket -timeout 10h
2019/01/31 11:28:57 [DEBUG] Running Sweepers for region (us-west-2):
...
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: 187416307283-awsmacietrail-dataevent
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: aws-athena-query-results-187416307283-us-east-1
...
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket (tf-acc-test-6417188599110687269destination) Objects: BucketRegionError: incorrect region, the bucket is not in 'us-west-2' region
status code: 301, request id: , host id:
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-alex-preview
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-alex-preview2
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-deploy-alex
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-emr-bootstrap-5850549931442788494
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-emr-bootstrap-8212862313789127315
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-io-dev
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-k8s-acc-test
2019/01/31 11:28:59 [INFO] Skipping S3 Bucket: tf-macie-test-bucket-921738264640544542
2019/01/31 11:29:00 [INFO] Deleting S3 Bucket (tf-object-test-bucket-272994333124655711) Object (tf-testing-obj-272994333124655711-all-params) Delete Marker: YECgZ632K8z.xlufooF.aeFvafBA6kuz
2019/01/31 11:29:02 [INFO] Deleting S3 Bucket (tf-object-test-bucket-3609874408477041358) Object (tf-testing-obj-3609874408477041358-all-params) Delete Marker: hQ4eUTYHGqhZ6lV9ATtCbu2F3HNuqgwa
2019/01/31 11:29:03 [INFO] Deleting S3 Bucket (tf-object-test-bucket-3660475575348874992) Object (updateable-key) Delete Marker: JxNsmwLQGbCqmtpMgt4n.d60NeCtC3V_
2019/01/31 11:29:04 [INFO] Deleting S3 Bucket (tf-object-test-bucket-3900350678782068183) Object (test-key) Delete Marker: auhlvd6dgHaEc4jv2sfi1yUKM_lkvh..
2019/01/31 11:29:05 [INFO] Deleting S3 Bucket (tf-object-test-bucket-4138169415932139850) Object (updateable-key) Delete Marker: nA74rE0HYETVIrXvq2zSu7Z4AQGc7jR9
2019/01/31 11:29:07 [INFO] Deleting S3 Bucket (tf-object-test-bucket-6391031696293038021) Object (updateable-key) Delete Marker: Cc0CRHZZ6P5Z3RIGSolfZk1KfNqs4n1l
2019/01/31 11:29:08 [INFO] Skipping S3 Bucket: tf-redshift-logging-5085425770880693968
2019/01/31 11:29:08 [INFO] Skipping S3 Bucket: tf-redshift-logging-9209707503695989768
2019/01/31 11:29:08 [INFO] Skipping S3 Bucket: tf-spot-datafeed-3152131621798213916
2019/01/31 11:29:08 [INFO] Skipping S3 Bucket (tf-test-bucket-1173093638223895558) Objects: BucketRegionError: incorrect region, the bucket is not in 'us-west-2' region
status code: 301, request id: , host id:
2019/01/31 11:29:09 [INFO] Skipping S3 Bucket (tf-test-bucket-6879147095700184482) Objects: BucketRegionError: incorrect region, the bucket is not in 'us-west-2' region
status code: 301, request id: , host id:
2019/01/31 11:29:09 [DEBUG] Sweeper (aws_s3_bucket) has dependency (aws_s3_bucket_object), running..
2019/01/31 11:29:09 [DEBUG] Sweeper (aws_s3_bucket_object) already ran in region (us-west-2)
...
2019/01/31 11:29:09 [INFO] Skipping S3 Bucket: 187416307283-awsmacietrail-dataevent
2019/01/31 11:29:09 [INFO] Skipping S3 Bucket: aws-athena-query-results-187416307283-us-east-1
...
2019/01/31 11:29:09 [INFO] Deleting S3 Bucket: tf-acc-test-6417188599110687269destination
2019/01/31 11:29:09 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket (tf-acc-test-6417188599110687269destination): BucketRegionError: incorrect region, the bucket is not in 'us-west-2' region
status code: 301, request id: , host id:
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-alex-preview
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-alex-preview2
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-deploy-alex
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-emr-bootstrap-5850549931442788494
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-emr-bootstrap-8212862313789127315
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-io-dev
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-k8s-acc-test
2019/01/31 11:29:10 [INFO] Skipping S3 Bucket: tf-macie-test-bucket-921738264640544542
2019/01/31 11:29:10 [INFO] Deleting S3 Bucket: tf-object-test-bucket-272994333124655711
2019/01/31 11:29:10 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:10 [INFO] Deleting S3 Bucket: tf-object-test-bucket-3609874408477041358
2019/01/31 11:29:10 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:11 [INFO] Deleting S3 Bucket: tf-object-test-bucket-3660475575348874992
2019/01/31 11:29:11 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:11 [INFO] Deleting S3 Bucket: tf-object-test-bucket-3900350678782068183
2019/01/31 11:29:11 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:12 [INFO] Deleting S3 Bucket: tf-object-test-bucket-4138169415932139850
2019/01/31 11:29:12 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:13 [INFO] Deleting S3 Bucket: tf-object-test-bucket-6391031696293038021
2019/01/31 11:29:13 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:13 [INFO] Deleting S3 Bucket: tf-object-test-bucket-7215878632290092620
2019/01/31 11:29:13 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:14 [INFO] Skipping S3 Bucket: tf-redshift-logging-5085425770880693968
2019/01/31 11:29:14 [INFO] Skipping S3 Bucket: tf-redshift-logging-9209707503695989768
2019/01/31 11:29:14 [INFO] Skipping S3 Bucket: tf-spot-datafeed-3152131621798213916
2019/01/31 11:29:14 [INFO] Deleting S3 Bucket: tf-test-bucket-1173093638223895558
2019/01/31 11:29:14 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:14 [INFO] Skipping S3 Bucket (tf-test-bucket-1173093638223895558): BucketRegionError: incorrect region, the bucket is not in 'us-west-2' region
status code: 301, request id: , host id:
2019/01/31 11:29:14 [INFO] Deleting S3 Bucket: tf-test-bucket-6879147095700184482
2019/01/31 11:29:14 [DEBUG] Waiting for state to become: [success]
2019/01/31 11:29:14 [INFO] Skipping S3 Bucket (tf-test-bucket-6879147095700184482): BucketRegionError: incorrect region, the bucket is not in 'us-west-2' region
status code: 301, request id: , host id:
2019/01/31 11:29:14 Sweeper Tests ran:
- aws_s3_bucket_object
- aws_s3_bucket
ok github.com/terraform-providers/terraform-provider-aws/aws 19.735s
```