chore: remove non-existent teams from CODEOWNERS
/bigtable/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/cloud-native-db-dpes
/cloudsql/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/infra-db-dpes
/datastore/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/cloud-native-db-dpes
-/errorreporting/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/observability-devx
/firestore/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/cloud-native-db-dpes
-/logging/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/observability-devx
/storage/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/cloud-storage-dpes
/storagetransfer/ @GoogleCloudPlatform/go-samples-reviewers @GoogleCloudPlatform/cloud-storage-dpes
/iot/ @GoogleCloudPlatform/go-samples-reviewers @gcseh @GoogleCloudPlatform/api-iot
