With the Roblox Friend Removal Button extension, a button is added to the corner of every name in the Friends List. Simply click on the button and that friend is removed.

More importantly, Roblox extensions are generally safe to use. Since extensions aren't altering gameplay in any way, they aren't a bannable offense. However, players using extensions should still ...

Thankfully, ROBLOX enables players to add multiple friends, and if needed, remove them too.