[CORD-3171]

Remove old build system repos from 6.0 manifest

Change-Id: I534867580c17e24fb606a1bba9782b6fba490a95
diff --git a/default.xml b/default.xml
index 272aec5..11f426d 100644
--- a/default.xml
+++ b/default.xml
@@ -13,10 +13,6 @@
 <project path="automation-tools" name="automation-tools" groups="build"/>
 <project path="docs" name="docs" groups="build"/>
 
-<project path="build" name="cord" groups="build"/>
-<project path="build/maas" name="maas" groups="build"/>
-<project path="build/platform-install" name="platform-install" groups="build"/>
-
 <project path="onos-apps" name="cord-onos-publisher" groups="onos"/>
 <project path="onos-apps/apps/aaa" name="aaa" groups="onos"/>
 <project path="onos-apps/apps/config" name="config" groups="onos"/>