The best advice has already been given - unless it is plot related, replace it with a an appropriate number of randomly generated hordes from the DMG. If it is plot related, keep it, but offset it (if the PC will get to keep it) against the hordes of treasure the PCs should find (replacing or tweaking as necessary).
I do miss seeing items with a bit more personality - almost all the items I hand out in my games are modified versions of existing items, usually with an extra little fun ability or a quirk that changes how you use it. I wish 5E had a built in mechanic that was a bit more comprehensive to add quirks to the items (I know there is one, but it just is too narrow).