chore(helm/v2-alpha): remove helm test feature (reverts pre-release addition)

Author: camilamacedo86

docs/book/src/cronjob-tutorial/testdata/project/.github/workflows/test-chart.yml

@@ -68,7 +68,3 @@ jobs:
       - name: Check Helm release status
         run: |
           make helm-status
-
-      - name: Run Helm tests
-        run: |
-          helm test project --namespace project-system

docs/book/src/cronjob-tutorial/testdata/project/dist/chart/templates/tests/test-manager-ready.yaml

@@ -68,7 +68,3 @@ jobs:
       - name: Check Helm release status
         run: |
           make helm-status
-
-      - name: Run Helm tests
-        run: |
-          helm test project --namespace project-system

docs/book/src/getting-started/testdata/project/.github/workflows/test-chart.yml

@@ -68,7 +68,3 @@ jobs:
       - name: Check Helm release status
         run: |
           make helm-status
-
-      - name: Run Helm tests
-        run: |
-          helm test project --namespace project-system