Unused Generated Pages

### URL

https://www.jupiterbroadcasting.com/categories/

### Summary

While looking into #516 I noticed that there are category pages for each show being built that are just blank. Hugo is making these html files and adding them to sitemap for some reason. My best spitball is that they are either some default by Hugo, but I am really not sure

```
jupiterbroadcasting.com/public/categories
├── coder-radio
│   ├── index.html
│   └── index.xml
├── index.html
├── index.xml
├── jupiter-extras
│   ├── index.html
│   └── index.xml
├── linux-action-news
│   ├── index.html
│   └── index.xml
├── linux-unplugged
│   ├── index.html
│   └── index.xml
├── office-hours
│   ├── index.html
│   └── index.xml
└── self-hosted
├── index.html
└── index.xml
```