Remove unnecessary "throws" declarations

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

java/google/registry/tools/DeleteReservedListCommand.java

@@ -36,7 +36,7 @@ final class DeleteReservedListCommand extends MutatingCommand {
   private String name;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     checkArgument(
         ReservedList.get(name).isPresent(),
         "Cannot delete the reserved list %s because it doesn't exist.",