ceph-global-perses: remove Ceph global Perses

Remove the Ceph global Perses dashboards because they're no longer
needed here.

Signed-off-by: Tatjana Dehler <tatjana.dehler@clyso.com>
On-behalf-of: SAP t.dehler@sap.com

Author: s0nea

README.md

@@ -31,8 +31,6 @@ cloud-storage-operations
               │
               ├── perses-dashboards/        Perses dashboards for visualizing key metrics.
               │
-              ├── perses-dashboards-global/ Perses dashboards for visualizing global metrics.
-              │
               ├── playbooks/                Step-by-step instructions for troubleshooting.       
               │
               ├── Chart.yaml                Helm chart manifest.

README.md.gotmpl

@@ -31,8 +31,6 @@ cloud-storage-operations
               │
               ├── perses-dashboards/        Perses dashboards for visualizing key metrics.
               │
-              ├── perses-dashboards-global/ Perses dashboards for visualizing global metrics.
-              │
               ├── playbooks/                Step-by-step instructions for troubleshooting.        
               │
               ├── Chart.yaml                Helm chart manifest.