How to remove Radio station playlist (1.4.4 and 1.5):
Click on "Antenna" icon:
Then go to "Edit List":
Then go to "Remove Stations":
Then click on number of Radio station do you want to remove and click "Save" (or click on "Remove All Radio Stations" for deleting all Radio Stations)
Works with: RadioLM 1.4.4 and RadioLM 1.5