How to not display values in the nodes or the links in SankeyDiagram using networkD3 in R

In the sankeydiagram example below, is there anyway to hide the "Values" being shown in the diagram while hovering - both on the Nodes as well as the Links. Im basically using the sankey chart to show a stylised flow diagram, and I would like the Values not be shown to the user at all

URL <- paste0('https://cdn.rawgit.com/christophergandrud/networkD3/master/JSONdata/energy.json')
energy <- jsonlite::fromJSON(URL)

sankeyNetwork(Links = energy$links, Nodes = energy$nodes, Source = 'source',
              Target = 'target', Value = 'value', NodeID = 'name',
              units = 'TWh', fontSize = 12, nodeWidth = 30)

To be clear, in the screenshot below,I would still like to see the Wind-Electricitygrid, but would like 289KWH not be displayed