Remove unnecessary "throws" declarations

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

javatests/google/registry/model/tmch/ClaimsListShardTest.java

@@ -50,12 +50,12 @@ public class ClaimsListShardTest {
   public final InjectRule inject = new InjectRule();
 
   @Before
-  public void before() throws Exception {
+  public void before() {
     inject.setStaticField(ClaimsListShard.class, "shardSize", 10);
   }
 
   @Test
-  public void test_unshardedSaveFails() throws Exception {
+  public void test_unshardedSaveFails() {
     assertThrows(
         UnshardedSaveException.class,
         () ->
@@ -72,13 +72,13 @@ public class ClaimsListShardTest {
   }
 
   @Test
-  public void testGet_safelyLoadsEmptyClaimsList_whenNoShardsExist() throws Exception {
+  public void testGet_safelyLoadsEmptyClaimsList_whenNoShardsExist() {
     assertThat(ClaimsListShard.get().labelsToKeys).isEmpty();
     assertThat(ClaimsListShard.get().creationTime).isEqualTo(START_OF_TIME);
   }
 
   @Test
-  public void test_savesAndGets_withSharding() throws Exception {
+  public void test_savesAndGets_withSharding() {
     // Create a ClaimsList that will need 4 shards to save.
     Map<String, String> labelsToKeys = new HashMap<>();
     for (int i = 0; i <= ClaimsListShard.shardSize * 3; i++) {

javatests/google/registry/model/tmch/TmchCrlTest.java

@@ -29,7 +29,7 @@ public class TmchCrlTest {
   @Rule public final AppEngineRule appEngine = AppEngineRule.builder().withDatastore().build();
 
   @Test
-  public void testSuccess() throws Exception {
+  public void testSuccess() {
     assertThat(TmchCrl.get()).isNull();
     TmchCrl.set("lolcat", "http://lol.cat");
     assertThat(TmchCrl.get().getCrl()).isEqualTo("lolcat");