cleaning up db

I have quite a lot of data related to mastodon, is this all really needed?
```
SELECT COUNT(*), meta_key FROM `wp_postmeta` 
WHERE meta_key` LIKE '%mastodon%'
GROUP BY `meta_key`;
```
returns
```
14099 	mastodon_reblog_id
```

also wp_posts  post types:
```
14110 	enable-mastodon-apps
329	 	friends_log
```
