use mockJdk18 by default in LightCodeInsightTestCase; remove dependency on swing/net classes in some tests

java/java-tests/testData/refactoring/inlineToAnonymousClass/RedundantImplementsInterface.java.after

@@ -1,12 +1,15 @@
-import java.awt.event.*;
 
 class A {
     private ActionListener b = new MyActionListener() {
-        public void actionPerformed(ActionEvent e) {
+        public void actionPerformed(int e) {
         }
     };
 
     private abstract class MyActionListener implements ActionListener {
     }
 
+}
+interface ActionListener {
+    public void actionPerformed(int e);
+
 }