fix typo in notebook: "removing"
fix typo in notebook: "removing"

Thanks to Sally Wilsak for pointing this out.
SylvainCorlay/bqplot,ChakriCherukuri/bqplot,ChakriCherukuri/bqplot,SylvainCorlay/bqplot,dmadeka/bqplot,ChakriCherukuri/bqplot,SylvainCorlay/bqplot,rmenegaux/bqplot,dmadeka/bqplot,ssunkara1/bqplot,bloomberg/bqplot,bloomberg/bqplot,ssunkara1/bqplot,bloomberg/bqplot,rmenegaux/bqplot