Remove unnecessary "throws" declarations

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=201058582

javatests/google/registry/flows/session/LogoutFlowTest.java

@@ -44,7 +44,7 @@ public class LogoutFlowTest extends FlowTestCase<LogoutFlow> {
   }
 
   @Test
-  public void testFailure() throws Exception {
+  public void testFailure() {
     sessionMetadata.setClientId(null);  // Turn off the implicit login
     EppException thrown = assertThrows(NotLoggedInException.class, this::runFlow);
     assertAboutEppExceptions().that(thrown).marshalsToXml();