How can I remove downloaded selections from my library?

[New user]

Some downloads I no longer need and it is downloading a podcast I didn't know I requested.

[Amay]

Hey there, welcome to the Spotify Community!

If I understand correctly, your Spotify App is auto downloading podcast episodes. Please correct me if I misunderstood. In this case, it is easy to turn that off. 

1. Head over to the podcast that is downloading episodes automatically.
2. Click on the settings or gear icon and configure auto-download option.
3. If you cannot see the gear icon then follow the podcast once, then check it.
4. Here is a quick YouTube video about the same from SpotifyCares.

That should do it. Let me know if you need anything else.