Bug 322401 [LinkedResources] Linked Resources properties page should have a Remove button
I20100810-0800 Project properties > Resource > Linked Resources > Linked Resources: Especially for invalid locations, a Remove button would be handy to remove one or multiple links.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/LinkedResourceEditor.java
return true;
	}
	boolean exists(IResource res) throws CoreException {
		URI uri = res.getLocationURI();
		if (uri != null) {
			IFileStore fileStore = EFS.getStore(uri);
			return (fileStore != null) && fileStore.fetchInfo().exists();
		}
		return false;
	}
	void updateSelection() {
		fEditResourceButton.setEnabled(getSelectedResource().length == 1);
		fConvertAbsoluteButton.setEnabled((getSelectedResource().length > 0)
				&& (areAbsolute(getSelectedResource())
				|| areFixed(getSelectedResource())));
	}
	boolean areFixed(IResource[] res) {
		for (int i = 0; i < res.length; i++) {
			String fullPath = res[i].getFullPath().toPortableString();
			if (!fFixedResources.containsKey(fullPath))
				return false;
		}
		return true;
	}
	IResource[] getSelectedResource() {
		IStructuredSelection selection = (IStructuredSelection) fTree
				.getSelection();
		Object[] array = selection.toArray();
		if (array.length > 0) {
			for (int i = 0; i < array.length; i++) {