[Trisquel-users] I did sth. stupid and I don´t know how to fix it

[megver . 2000]

I installed torlaucher extension in Abrowser, because it failed on connecting  
to the Tor network, I used to watch YT videos only (because of the HTML5  
player). The problem is that now I start Abrowser and it appear me a message  
saying "Unable to start tor, the Tor executable is missing" and then it says  
"waiting for tor to start" and if I quit it appears "Could not connect to Tor  
control port". How can i fix that?

P.D: Why when deleting software in GNU/Linux, and then you reinstall it, it  
seems like if nothing would have happened? I mean, there is no way to delete  
data, like in Android or Wincrap.