TST: Don't import fvtk in this test.
TST: Don't import fvtk in this test.

beni55/dipy,samuelstjean/dipy,demianw/dipy,StongeEtienne/dipy,mdesco/dipy,villalonreina/dipy,matthieudumont/dipy,Messaoud-Boudjada/dipy,nilgoyyou/dipy,matthieudumont/dipy,maurozucchelli/dipy,oesteban/dipy,samuelstjean/dipy,rfdougherty/dipy,maurozucchelli/dipy,StongeEtienne/dipy,jyeatman/dipy,sinkpoint/dipy,villalonreina/dipy,oesteban/dipy,rfdougherty/dipy,nilgoyyou/dipy,mdesco/dipy,FrancoisRheaultUS/dipy,jyeatman/dipy,Messaoud-Boudjada/dipy,JohnGriffiths/dipy,samuelstjean/dipy,FrancoisRheaultUS/dipy,sinkpoint/dipy,beni55/dipy,JohnGriffiths/dipy,demianw/dipy,maurozucchelli/dipy