[Java] Suppress deprecation warning on finalize method

Java 9 deprecates the finalize method.
For now just suppress the deprecation warning.
Fixes #1237

Examples/test-suite/java_throws.i

@@ -192,6 +192,7 @@ try {
 
 // Need to handle the checked exception in NoExceptTest.delete()
 %typemap(javafinalize) SWIGTYPE %{
+  @SuppressWarnings("deprecation")
   protected void finalize() {
     try {
       delete();