Remove redundant and incorrect key declaration in mouseover function in plots.js
Remove redundant and incorrect key declaration in mouseover function in plots.js

richford/AFQ-viz,richford/AFQ-Browser,yeatmanlab/AFQ-Browser,arokem/AFQ-Browser,richford/AFQ-viz,arokem/AFQ-Browser,yeatmanlab/AFQ-viz,yeatmanlab/AFQ-Browser,yeatmanlab/AFQ-viz,arokem/AFQ-Browser,yeatmanlab/AFQ-Browser,richford/AFQ-Browser,richford/AFQ-Browser