#331974 Restore PDE versions of BrandingIron and ProductFile

... in order to avoid any risk in pde.build at this point in time
diff --git a/p2/publishing/org.eclipse.pde.build.tests/src/org/eclipse/pde/build/internal/tests/ProductTests.java b/p2/publishing/org.eclipse.pde.build.tests/src/org/eclipse/pde/build/internal/tests/ProductTests.java
index 6dc8d87..3465ef4 100755
--- a/p2/publishing/org.eclipse.pde.build.tests/src/org/eclipse/pde/build/internal/tests/ProductTests.java
+++ b/p2/publishing/org.eclipse.pde.build.tests/src/org/eclipse/pde/build/internal/tests/ProductTests.java
@@ -18,7 +18,6 @@
 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.*;
 import org.eclipse.equinox.internal.p2.core.helpers.FileUtils;
-import org.eclipse.equinox.internal.p2.publisher.eclipse.ProductFile;
 import org.eclipse.equinox.p2.publisher.eclipse.FeatureEntry;
 import org.eclipse.osgi.service.resolver.BundleDescription;
 import org.eclipse.osgi.service.resolver.StateObjectFactory;