Remove CalVer from NOTES.txt and README notice (#384)

* Remove CalVer from NOTES.txt and README notice

* Remove lingering end

* Minor doc update

Author: mimartin12

README.md

@@ -1,13 +1,12 @@
 # Bitwarden Helm Charts Repository
-> [!IMPORTANT]
-> **CalVer Deprecation Notice**
-> 
-> The CalVer versioning scheme for the Bitwarden self-host chart will be deprecated on **November 13, 2025**.
-> 
-> After this date, only SemVer versions will be supported and released.
-> 
-> For more information, see the chart's [NOTES.txt](https://github.com/bitwarden/helm-charts/blob/main/charts/self-host/templates/NOTES.txt).
 
+This is a collection of Bitwarden maintained charts for https://github.com/bitwarden projects.
 
 - [Self-Host](charts/self-host/README.md)
 - [Secrets Manager Operator](charts/sm-operator/README.md)
+
+The charts can be added using following command:
+
+```bash
+helm repo add bitwarden https://charts.bitwarden.com/
+```

charts/self-host/templates/NOTES.txt

@@ -1,26 +1,7 @@
-{{- $isCalVer := regexMatch "^[0-9]{4}\\." .Chart.Version }}
 {{- $chartVersion := .Chart.Version }}
 
 =====================================================
 Bitwarden Self-Host Helm Chart {{ $chartVersion }}
 =====================================================
 
 Bitwarden been successfully deployed!
-
-{{- if $isCalVer }}
-
-IMPORTANT MIGRATION NOTICE
-
-CalVer Deprecation: November 13, 2025
-The CalVer versioning scheme ({{ $chartVersion }}) will be deprecated on November 13, 2025.
-After this date, only SemVer versions will be supported and released.
-
-Start Using SemVer (Optional)
-
-To start using SemVer 1.0.0 now:
-   helm upgrade {{ .Release.Name }} bitwarden/self-host --version <semver-version> -n {{ .Release.Namespace }}
-
-Note: For SemVer installations until November 13, 2025, you must always specify --version <semver-version> during upgrades
-to avoid reverting back to CalVer. We recommend upgrading to SemVer after November 13, 2025 for the smoothest experience.
-
-{{- end }}