Remove more unnecessary "throws" declarations

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=201243722

java/google/registry/keyring/kms/KmsUpdater.java

@@ -127,7 +127,7 @@ public final class KmsUpdater {
    * <p>The operations in this method are organized so that existing {@link KmsSecretRevision}
    * entities remain primary and decryptable if a failure occurs.
    */
-  public void update() throws IOException {
+  public void update() {
     checkState(!secretValues.isEmpty(), "At least one Keyring value must be persisted");
 
     persistEncryptedValues(encryptValues(secretValues));
@@ -139,8 +139,7 @@ public final class KmsUpdater {
    *
    * @see google.registry.config.RegistryConfigSettings#kms
    */
-  private ImmutableMap<String, EncryptResponse> encryptValues(Map<String, byte[]> keyValues)
-      throws IOException {
+  private ImmutableMap<String, EncryptResponse> encryptValues(Map<String, byte[]> keyValues) {
     ImmutableMap.Builder<String, EncryptResponse> encryptedValues = new ImmutableMap.Builder<>();
     for (Map.Entry<String, byte[]> entry : keyValues.entrySet()) {
       String secretName = entry.getKey();

java/google/registry/tools/CreateOrUpdateTldCommand.java

@@ -272,7 +272,7 @@ abstract class CreateOrUpdateTldCommand extends MutatingCommand {
   protected abstract void initTldCommand();
 
   @Override
-  protected final void init() throws Exception {
+  protected final void init() {
     assertAllowedEnvironment();
     initTldCommand();
     String duplicates = Joiner.on(", ").join(findDuplicates(mainParameters));

java/google/registry/tools/LoadSnapshotCommand.java

@@ -66,8 +66,7 @@ final class LoadSnapshotCommand extends BigqueryCommand {
    * Starts load jobs for the given snapshot kinds, and returns a map of kind name to
    * ListenableFuture representing the result of the load job for that kind.
    */
-  private Map<String, ListenableFuture<?>> loadSnapshotKinds(List<String> kindNames)
-      throws Exception {
+  private Map<String, ListenableFuture<?>> loadSnapshotKinds(List<String> kindNames) {
     ImmutableMap.Builder<String, ListenableFuture<?>> builder = new ImmutableMap.Builder<>();
     for (String kind : kindNames) {
       String filename = String.format(
@@ -79,7 +78,7 @@ final class LoadSnapshotCommand extends BigqueryCommand {
   }
 
   /** Starts a load job for the specified kind name, sourcing data from the given GCS file. */
-  private ListenableFuture<?> loadSnapshotFile(String filename, String kindName) throws Exception {
+  private ListenableFuture<?> loadSnapshotFile(String filename, String kindName) {
     return bigquery().load(
         bigquery().buildDestinationTable(kindName)
             .description("Datastore snapshot import for " + kindName + ".")

java/google/registry/util/TeeOutputStream.java

@@ -61,7 +61,7 @@ public final class TeeOutputStream extends OutputStream {
 
   /** Closes the stream.  Any calls to a {@code write()} method after this will throw. */
   @Override
-  public void close() throws IOException {
+  public void close() {
     isClosed = true;
   }
 }