Bug 127121 Fix warnings in UA plugins
We have many warnings in the UA plugins, most of them from org.eclipse.ua.tests as it uses internal code from the other plugins. In addition, there are unused imports, accessing a static method from an instance, unused local variables and deprecated code.
bundles/org.eclipse.ui.browser/src/org/eclipse/ui/internal/browser/ImageResource.java
private static ImageRegistry imageRegistry;
	
	
	private static Map imageDescriptors;
	
	private static URL ICON_BASE_URL;
	static {
		try {
			String pathSuffix = "icons/"; 
			ICON_BASE_URL = Platform.find(WebBrowserUIPlugin.getInstance().getBundle(), new Path(pathSuffix));
		} catch (Exception e) {
			Trace.trace(Trace.SEVERE, "Could not set icon base URL", e); 
		}
	}
	private static Image[] busyImages;
	private static final String URL_CLCL = "clcl16/"; 
	private static final String URL_ELCL = "elcl16/"; 
	private static final String URL_DLCL = "dlcl16/"; 
	private static final String URL_OBJ = "obj16/";