[COMMON] fix primary PVC for postgres template

The last line of the template rewrites PVC storage class and thus the
behavior is not the expected one.

This patch removes the faulty (and unecessary) line.

Issue-ID: OOM-1227
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: Ia0e2f6fbd7d40bbf0de719bbf35f0f0424e1a076
diff --git a/kubernetes/common/postgres/templates/pvc-primary.yaml b/kubernetes/common/postgres/templates/pvc-primary.yaml
index fa25f19..a47d3ed 100644
--- a/kubernetes/common/postgres/templates/pvc-primary.yaml
+++ b/kubernetes/common/postgres/templates/pvc-primary.yaml
@@ -41,5 +41,4 @@
 {{- else }}
   storageClassName: {{ include "common.storageClass" . }}
 {{- end }}
-  storageClassName: "{{ include "common.fullname" . }}-primary"
 {{- end -}}