bug 471276 - revert changes in ExternalStorageEditorInput

Signed-off-by: Alex Panchenko <alex.panchenko@gmail.com>
Change-Id: Ia859d7e24fc831267b4319b59230177f8989c2f5
diff --git a/core/plugins/org.eclipse.dltk.ui/src/org/eclipse/dltk/internal/ui/editor/ExternalStorageEditorInput.java b/core/plugins/org.eclipse.dltk.ui/src/org/eclipse/dltk/internal/ui/editor/ExternalStorageEditorInput.java
index 4dfdc65..6ffba3a 100644
--- a/core/plugins/org.eclipse.dltk.ui/src/org/eclipse/dltk/internal/ui/editor/ExternalStorageEditorInput.java
+++ b/core/plugins/org.eclipse.dltk.ui/src/org/eclipse/dltk/internal/ui/editor/ExternalStorageEditorInput.java
@@ -11,7 +11,6 @@
 
 import org.eclipse.core.resources.IStorage;
 import org.eclipse.core.runtime.IPath;
-import org.eclipse.core.runtime.Platform;
 import org.eclipse.dltk.core.IExternalSourceModule;
 import org.eclipse.dltk.core.IModelElement;
 import org.eclipse.dltk.internal.ui.ExternalSourceModuleEditorInputFactory;
@@ -47,12 +46,6 @@
 
 	public IPersistableElement getPersistable() {
 		if (fStorage instanceof IExternalSourceModule) {
-			final IPersistableElement element = (IPersistableElement) Platform
-					.getAdapterManager()
-					.getAdapter(fStorage, IPersistableElement.class);
-			if (element != null) {
-				return element;
-			}
 			return ExternalSourceModuleEditorInputFactory
 					.createPersistableElement((IExternalSourceModule) fStorage);
 		}