[Releng] Prepare setup for 2020-12.
diff --git a/plugins/org.eclipse.xsd/XSD.setup b/plugins/org.eclipse.xsd/XSD.setup
index 1e8e954..1db05d6 100644
--- a/plugins/org.eclipse.xsd/XSD.setup
+++ b/plugins/org.eclipse.xsd/XSD.setup
@@ -150,6 +150,13 @@
       <sourceLocator
           rootFolder="${xsd.git.clone.location}"/>
       <repositoryList
+          name="2020-12">
+        <repository
+            url="http://download.eclipse.org/releases/2020-12"/>
+        <repository
+            url="http://download.eclipse.org/modeling/emf/emf/builds/milestone/latest"/>
+      </repositoryList>
+      <repositoryList
           name="2020-09">
         <repository
             url="http://download.eclipse.org/releases/2020-09"/>
@@ -357,11 +364,6 @@
         option="-Doomph.redirection.xsd.setup"
         value="=http://git.eclipse.org/c/xsd/org.eclipse.xsd.git/plain/plugins/org.eclipse.xsd/XSD.setup->${xsd.git.clone.location|uri}/plugins/org.eclipse.xsd/XSD.setup"
         vm="true"/>
-    <setupTask
-        xsi:type="setup:VariableTask"
-        name="eclipse.target.platform"
-        defaultValue="Photon"
-        storageURI="scope://Workspace"/>
   </stream>
   <logicalProjectContainer
       xsi:type="setup:ProjectCatalog"