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

java/java-tests/testData/refactoring/inlineToAnonymousClass/ImplementsInterface.java

@@ -1,10 +1,13 @@
-import java.awt.event.*;
 
 class A {
     private ActionListener b = new Inner();
 
     private class <caret>Inner implements ActionListener {
-        public void actionPerformed(ActionEvent e) {
+        public void actionPerformed(int e) {
         }
     }
+}
+interface ActionListener {
+    public void actionPerformed(int e);
+
 }