is this necessary?
diff --git a/org.eclipse.m2e.editor.xml/plugin.xml b/org.eclipse.m2e.editor.xml/plugin.xml
index 87660e8..dc47b3d 100644
--- a/org.eclipse.m2e.editor.xml/plugin.xml
+++ b/org.eclipse.m2e.editor.xml/plugin.xml
@@ -5,10 +5,10 @@
   <extension point="org.eclipse.wst.sse.ui.editorConfiguration">
     <sourceViewerConfiguration
         class="org.eclipse.m2e.editor.xml.PomStructuredTextViewConfiguration"
-        target="org.eclipse.m2e.core.pomFile, org.eclipse.wst.xml.core.xmlsource, org.eclipse.core.runtime.xml"/>
+        target="org.eclipse.m2e.core.pomFile"/>
     <contentOutlineConfiguration
         class="org.eclipse.m2e.editor.xml.PomContentOutlineConfiguration"
-        target="org.eclipse.m2e.core.pomFile, org.eclipse.wst.xml.core.xmlsource, org.eclipse.core.runtime.xml"/>
+        target="org.eclipse.m2e.core.pomFile"/>
     <provisionalConfiguration
         type="org.eclipse.jface.text.quickassist.IQuickAssistProcessor"
         class="org.eclipse.m2e.editor.xml.PomQuickAssistProcessor"
@@ -33,7 +33,7 @@
 		<factory
 			contentTypeId="org.eclipse.m2e.core.pomFile"
 			class="org.eclipse.m2e.editor.xml.internal.POMMarkerAnnotationModelFactory" />
-	</extension>	
+	</extension>
   <extension  point="org.eclipse.ui.editors.templates">
     <contextType name="%contextType.document"
       class="org.eclipse.m2e.editor.xml.PomTemplateContextType"