8285635: javax/swing/JRootPane/DefaultButtonTest.java failed with Default Button not pressed for L&F: com.sun.java.swing.plaf.motif.MotifLookAndFeel

Reviewed-by: tr, jdv

Author: prsadhuk

test/jdk/javax/swing/JRootPane/DefaultButtonTest.java

@@ -89,6 +89,12 @@ public void runTest() throws Exception {
                 buttonPressed = false;
                 String lafName = laf.getClassName();
                 System.out.println("Testing L&F: " + lafName);
+
+                // Ignore obsolete/deprecated Motif
+                if (lafName.contains("Motif")) {
+                    System.out.println("Skipped Motif");
+                    continue;
+                }
                 SwingUtilities.invokeAndWait(() -> {
                     setLookAndFeel(lafName);
                     createUI();