Switch Portworx deployment to manifest-based

Remove Helm chart source (repo URL invalid). Deploy via manifests only.
Operator must be installed separately via kubectl apply.

cluster/platform/portworx-csi/application.yaml

@@ -25,21 +25,12 @@ metadata:
     argocd.argoproj.io/sync-wave: "2"
 spec:
   project: default
-  sources:
-    # Source 1: Portworx Operator Helm chart from Portworx
-    - repoURL: https://portworx.github.io/px-operator
-      chart: px-operator
-      targetRevision: 26.2.0
-      helm:
-        valueFiles:
-          - $values/cluster/platform/portworx-csi/operator-values.yaml
-    # Source 2: Repo — StorageCluster spec, StorageClasses, ExternalSecret
-    - repoURL: https://gitea.mk-labs.cloud/rblundon/homelab.git
-      targetRevision: main
-      path: cluster/platform/portworx-csi
-      ref: values
-      directory:
-        exclude: "application.yaml"
+  source:
+    repoURL: https://gitea.mk-labs.cloud/rblundon/homelab.git
+    targetRevision: main
+    path: cluster/platform/portworx-csi
+    directory:
+      exclude: "application.yaml"
   destination:
     server: https://kubernetes.default.svc
     namespace: portworx