Remove references to FreeBSD and OpenBSD.

content/wiki/linux.md

@@ -77,8 +77,6 @@ Here's a short and incomplete list to help you choose:
 For advanced users:
 1. Void Linux
 2. Gentoo
-3. OpenBSD
-4. FreeBSD
 
 ## Tips for selecting a distro
 If you are a beginner and you don't want to mess with the terminal that  much,