rm useless Fx.supplyDefaults call in doModeBar subroutine

- as the full Plots.supplyDefaults is called before the
  doModeBar subroutine.

Author: etpinard

src/plot_api/subroutines.js

@@ -295,7 +295,6 @@ exports.doModeBar = function(gd) {
     var subplotIds, i;
 
     ModeBar.manage(gd);
-    Plotly.Fx.supplyLayoutDefaults(gd.layout, gd._fullLayout, gd._fullData);
     Plotly.Fx.init(gd);
 
     subplotIds = Plots.getSubplotIds(fullLayout, 'gl3d');