Where is the Truncate Silence option in Audacity?

I click on the effects drop down menu and it’s not on there, where on earth is it? I run audacity on windows 7 and I can’t find it anywhere, I really need to this option because i spend and hour trying to remove every space in my audio track.

I don’t think it’s a formal effect.

https://forum.audacityteam.org/t/any-way-to-automatically-delete-pauses-in-speech/28281/2
Koz