White clover is generally considered more of a turf weed than a garden weed. However, you may have some if your garden area was once a low maintenance turf area. White clover is a legume which means that it along with other bean family members fix nitrogen into the soil that the plant can use from the air. It is an early spring flowering weed that will benefit the early pollinators. Leave it around your garden area. If it is too much, here are some resources to help deal with clover.
https://hnr.k-state.edu/extension/info-center/common-pest-problems/common-pest-problem-new/White%20Clover.pdf
http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=m650