Update Helm charts

1. Remove init containers which don't seem to be required
2. Update AMF image

Change-Id: Ib36e9c06f229b982d1825a103e183797191a13ec
diff --git a/5g-control-plane/values.yaml b/5g-control-plane/values.yaml
index 8ddcf66..ae2186c 100644
--- a/5g-control-plane/values.yaml
+++ b/5g-control-plane/values.yaml
@@ -7,7 +7,7 @@
   repository: "" #default docker hub
   tags:
     init: omecproject/pod-init:1.0.0
-    amf: omecproject/5gc-amf:master-c132f0d
+    amf: omecproject/5gc-amf:master-6766d15
     nrf: omecproject/5gc-nrf:master-5200cf8
     smf: omecproject/5gc-smf:master-9498f2d
     ausf: omecproject/5gc-ausf:master-1890449