Revert "configure django storages with env vars"

This reverts commit 5f38856dd9.

deployment/kustomize/base/portal/deployment.yaml

@@ -54,25 +54,5 @@ spec:
                 secretKeyRef:
                   name: database-creds
                   key: POSTGRESQL_DB
-            - name: SERVALA_STORAGE_BUCKET_NAME
-              valueFrom:
-                secretKeyRef:
-                  name: portal-storage-creds
-                  key: BUCKET_NAME
-            - name: SERVALA_S3_ENDPOINT_URL
-              valueFrom:
-                secretKeyRef:
-                  name: portal-storage-creds
-                  key: ENDPOINT_URL
-            - name: SERVALA_ACCESS_KEY_ID
-              valueFrom:
-                secretKeyRef:
-                  name: portal-storage-creds
-                  key: AWS_ACCESS_KEY_ID
-            - name: SERVALA_SECRET_ACCESS_KEY
-              valueFrom:
-                secretKeyRef:
-                  name: portal-storage-creds
-                  key: AWS_SECRET_ACCESS_KEY
             - name: UV_CACHE_DIR
               value: /app/.uvcache