VOL-2828 Update voltha-2.3 branch manifest

Change-Id: I4e614fdc920783d05ae8fd738185f702e435bc3d
diff --git a/default.xml b/default.xml
index ab1955a..182578f 100644
--- a/default.xml
+++ b/default.xml
@@ -19,31 +19,22 @@
   <remote  name="opencord"
            fetch=".."
            review="https://gerrit.opencord.org/"
-           revision="master" />
-  <default revision="master"
+           revision="voltha-2.3" />
+  <default revision="voltha-2.3"
            remote="opencord"
            sync-j="4" />
 
   <project path="bbsim" name="bbsim"/>
-  <project path="cordctl" name="cordctl"/>
-  <project path="kafka-topic-exporter" name="kafka-topic-exporter"/>
   <project path="ofagent-go" name="ofagent-go"/>
-  <project path="ofagent-py" name="ofagent-py"/>
-  <project path="omci-sim" name="omci-sim"/>
   <project path="pyvoltha" name="pyvoltha"/>
-  <project path="sadis-server" name="sadis-server"/>
   <project path="voltctl" name="voltctl"/>
-  <project path="voltha-api-server" name="voltha-api-server"/>
-  <project path="voltha-bbsim" name="voltha-bbsim"/>
   <project path="voltha-go" name="voltha-go"/>
+  <project path="voltha-helm-charts" name="voltha-helm-charts"/>
   <project path="voltha-lib-go" name="voltha-lib-go"/>
   <project path="voltha-onos" name="voltha-onos"/>
-  <project path="voltha-helm-charts" name="voltha-helm-charts"/>
   <project path="voltha-openolt-adapter" name="voltha-openolt-adapter"/>
   <project path="voltha-openonu-adapter" name="voltha-openonu-adapter"/>
   <project path="voltha-protos" name="voltha-protos"/>
-  <project path="voltha-simolt-adapter" name="voltha-simolt-adapter"/>
-  <project path="voltha-simonu-adapter" name="voltha-simonu-adapter"/>
   <project path="voltha-system-tests" name="voltha-system-tests"/>
 
 </manifest>