That is correct, but as mentioned i make a small lesson out of it, so to understand what happens where.
So trying to get some more explanation over how it works, inside. Deleting the shortcode from theme, is quick yes, but you could do something (as more sc's are present) 'harmfull'. Both methods are basically the same (1 = the call ; 2 is how its done) My answer keeps the sc (postion and written shortcode) in theme intact (but looses its function), and makes it easier to restore.( use of commented //) >
If you know what it does> that is a way to get the info, or its action..
Not intended to make it difficult, but should you get an update, and forget about the change, (maybe for something else you did) now you have possible method to look into it further. Reading some texts.. where does it happen...