[tanka single-binary] Remove unnecessary PVC from deployment

[irizzant]

Describe the bug

There is an extra PersistentVolumeClaim which is not needed when deploying Tempo with Tanka as single-binary, as you can see here.

To Reproduce
Steps to reproduce the behavior:

1. Deploy Tempo with Tanka single-binary
2. Check deployed resources

Expected behavior

There should be no extra PersistentVolumeClaim since it's already created by the StatefulSet's persistentVolumeClaimTemplate.

Environment:

• Infrastructure: [e.g., Kubernetes, bare-metal, laptop]
• Deployment tool: [e.g., helm, jsonnet]

Additional Context