Remove helm charts (#251)

We can use ioc-instance directly now

https://github.com/epics-containers/ec-helm-charts/releases/tag/5.0.0

Author: GDYendell

.github/workflows/_helm.yml

@@ -18,8 +18,5 @@ jobs:
       - name: Install python packages
         uses: ./.github/actions/install_requirements
 
-      - name: Install helm plugins
-        run: helm plugin install https://github.com/losisin/helm-values-schema-json.git
-
       - name: Run tox
         run: tox -e ${{ inputs.tox }}

.github/workflows/_tox.yml

@@ -39,22 +39,16 @@ jobs:
   dist:
     uses: ./.github/workflows/_dist.yml
 
-  helm:
-    uses: ./.github/workflows/_helm.yml
-    permissions:
-      contents: read
-      packages: write
-
   pypi:
     if: github.ref_type == 'tag'
-    needs: [dist, test, helm]
+    needs: [dist, test]
     uses: ./.github/workflows/_pypi.yml
     permissions:
       id-token: write
 
   release:
     if: github.ref_type == 'tag'
-    needs: [dist, test, docs, helm]
+    needs: [dist, test, docs]
     uses: ./.github/workflows/_release.yml
     permissions:
       contents: write

.github/workflows/ci.yml

@@ -23,11 +23,3 @@ repos:
         entry: ruff format --force-exclude
         types: [python]
         require_serial: true
-
-  - repo: https://github.com/losisin/helm-values-schema-json
-    rev: v2.2.1
-    hooks:
-      - id: helm-schema
-        args:
-          - --config
-          - Charts/fastcs/.schema.config.yaml