fix(examples): remove needless throws exception

Signed-off-by: Scott Hamrick <2623452+cshamrick@users.noreply.github.com>

Author: cshamrick

examples/src/main/java/io/opentdf/platform/ListSubjectMappings.java

@@ -16,7 +16,7 @@
 public class ListSubjectMappings {
   private static final Logger logger = LogManager.getLogger(ListSubjectMappings.class);
 
-  public static void main(String[] args) throws Exception {
+  public static void main(String[] args) {
 
     String clientId = "opentdf";
     String clientSecret = "secret";