Remove us-east-1 default value for S3 region
Remove us-east-1 default value for S3 region

This is now handled in the code.

[#158658908]

cloudfoundry-incubator/bits-service-release,cloudfoundry-incubator/bits-service-release,cloudfoundry-incubator/bits-service-release,cloudfoundry-incubator/bits-service-release