Cleanup (obsolete API deprecated)

platform/util/src/com/intellij/util/lang/ClassPath.java

@@ -58,7 +58,7 @@ public class ClassPath {
     push(urls);
   }
 
-  // Accessed by reflection from PluginClassLoader // TODO: do we need it?
+  /** @deprecated to be removed in IDEA 15 */
   void addURL(URL url) {
     push(Collections.singletonList(url));
   }

platform/util/src/com/intellij/util/lang/UrlClassLoader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2013 JetBrains s.r.o.
+ * Copyright 2000-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -132,6 +132,8 @@ public class UrlClassLoader extends ClassLoader {
     }
   }
 
+  /** @deprecated to be removed in IDEA 15 */
+  @SuppressWarnings({"unused", "deprecation"})
   public void addURL(URL url) {
     myClassPath.addURL(url);
     myURLs.add(url);