3 of the uses for UV lights in bio:
1. Keep surfaces sterile, it is common to leave a UV light on in a sterile culture hood when not in use.
2. Visualize DNA bands in a gel, most DNA stains are excited by UV.
3. Visualize bacteria/yeast/etc that have a UV-excitable fluorescent protein.
I say keep it, though it may end up being more useful to pull the lights than keep the whole box.
Be aware of safety, short wave UV can burn skin and eyes quickly.