fix: don't report a gapic version for storage (#9549)
fix: don't report a gapic version for storage (#9549)

As storage libraries don't have a gapic layer we shouldn't indicate a version in our headers.
tseaver/google-cloud-python,tswast/google-cloud-python,tswast/google-cloud-python,GoogleCloudPlatform/gcloud-python,tseaver/google-cloud-python,GoogleCloudPlatform/gcloud-python,tswast/google-cloud-python,googleapis/google-cloud-python,googleapis/google-cloud-python,tseaver/google-cloud-python