If you have gone to Audio Options and turned off the Radio and then to Game Options and turned off Radio Subtitles and still get the annoying "FORM ON ME!" text, I have a solution.
First you will need to download Notepad ++ from here:
Download the installer package.
Second you will need to follow my instructions and do not change anything else except what I tell you to change.
1. Go to My Computer/ This PC
4. Right click and edit with notepad++
5. Find showTitles=0; & showRadio=0; One will be right after the other.
6. Make sure both have a 0 after them instead of a 1.
7. After changing, go to File and then Save and then close.
Now when you start your game you won't see that annoying text anymore.