You may want to keep that if you're using aspects of multicurrency. Without it you could expect some confusion as the customer enters checkout. If you really want it gone or at least hidden it will be totally possible to do without much fuss.
However, given there's a missing currency label (eg CAD) in the string it makes me think there's another issue at play making it show when it shouldn't.
A link to the shop, theme used, and some replication steps would be rather useful.