Bug 125346 Delete IDE copy of CompositeResourceMapping
Build: I20060125 Both core.resources and IDE have a CompositeResourceMapping class. Since the core class is now API, the copy in the IDE plugin should be deleted for consistency. The IDE copy is not API.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/model/WorkingSetAdapterFactory.java
/*
     * Adapter for converting a working set to a resource mapping for
     * use by object contributions.
     */
    class ContributorResourceAdapter implements IContributorResourceAdapter2 {