Remove unnecessary "throws" declarations

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

javatests/google/registry/tools/UpdateReservedListCommandTest.java

@@ -90,7 +90,7 @@ public class UpdateReservedListCommandTest extends
   }
 
   @Test
-  public void testFailure_reservedListDoesntExist() throws Exception {
+  public void testFailure_reservedListDoesntExist() {
     String errorMessage =
         "Could not update reserved list xn--q9jyb4c_poobah because it doesn't exist.";
     IllegalArgumentException thrown =