Remove unneeded hivemind indexes
Savings would be:
| hive_posts_api_helper | 10.2 GB |
|----------------------------------------------------|---------|
| hive_posts_api_helper_author_s_permlink_idx UNUSED | 9.42 GB |
Savings would be:
| hive_posts_api_helper | 10.2 GB |
|----------------------------------------------------|---------|
| hive_posts_api_helper_author_s_permlink_idx UNUSED | 9.42 GB |