Remove unnecessary "throws" declarations

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

java/google/registry/tools/UpdateCursorsCommand.java

@@ -47,7 +47,7 @@ final class UpdateCursorsCommand extends MutatingCommand {
   private DateTime newTimestamp;
 
   @Override
-  protected void init() throws Exception {
+  protected void init() {
     if (isNullOrEmpty(tlds)) {
       Cursor cursor = ofy().load().key(Cursor.createGlobalKey(cursorType)).now();
       stageEntityChange(cursor, Cursor.createGlobal(cursorType, newTimestamp));