Guild Wars 2

So I played a little bit back in the previous living story and I have a bunch of those fragments left over. What can I do with them? should I destroy them or what?

the code fragments? the ones you get 25 of and combine them to make a cypher?
if you have 25 of one type, you should double-click them and use the cypher. (maybe you still can? iuno)
if you have less than that, you can fairly safely delete them. There’s a small chance they’ll be used again, but it’s not a very high chance, and really, what would saving them get you? a rare time, if that? a year of a bank space is worth more than 30s