Remove unnecessary "throws" declarations

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

javatests/google/registry/backup/DeleteOldCommitLogsActionTest.java

@@ -48,7 +48,7 @@ public class DeleteOldCommitLogsActionTest
   public final InjectRule inject = new InjectRule();
 
   @Before
-  public void setup() throws Exception {
+  public void setup() {
     inject.setStaticField(Ofy.class, "clock", clock);
     action = new DeleteOldCommitLogsAction();
     action.mrRunner = makeDefaultRunner();