Bug 180758 [IDE] Deleting a project but not the contents asks if you want to delete read-only files
I have noticed that in 3.3M6, if I delete a project that has read-only files in it, it will prompt if I want to delete the files even if I select "Do not delete contents". The files are not actually deleted, but the error dialog should not be presented to the user since the files are not actually being deleted. I don't remember seeing this in 3.3M4 or earlier.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/DeleteResourceAction.java
IIDEHelpContextIds.DELETE_RESOURCE_ACTION);
		setId(ID);
		if (shell == null) {
			throw new IllegalArgumentException();
		}
		this.shell = shell;
	}
	/**
	 * Returns whether delete can be performed on the current selection.
	 * 
	 * @param resources
	 *            the selected resources
	 * @return <code>true</code> if the resources can be deleted, and
	 *         <code>false</code> if the selection contains non-resources or
	 *         phantom resources
	 */
	private boolean canDelete(IResource[] resources) {
		
		
		if (!(containsOnlyProjects(resources) || containsOnlyNonProjects(resources))) {
			return false;
		}
		if (resources.length == 0) {
			return false;
		}
		
		for (int i = 0; i < resources.length; i++) {
			IResource resource = resources[i];
			if (resource.isPhantom()) {
				return false;