Remove unnecessary "throws" declarations

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

java/google/registry/tools/CreateCreditCommand.java

@@ -68,7 +68,7 @@ final class CreateCreditCommand extends MutatingCommand {
   private DateTime effectiveTime;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     DateTime now = DateTime.now(UTC);
     Registrar registrar =
         checkArgumentPresent(