updated subplots import in figure factories (#1899)

Author: emmanuelle

Diff for: packages/python/plotly/plotly/figure_factory/_bullet.py

@@ -35,7 +35,7 @@ def _bullet(
         horizontal_spacing = 1.0 / num_of_lanes
     if not vertical_spacing:
         vertical_spacing = 1.0 / num_of_lanes
-    fig = plotly.tools.make_subplots(
+    fig = plotly.subplots.make_subplots(
         num_of_rows,
         num_of_cols,
         print_grid=False,

Diff for: packages/python/plotly/plotly/figure_factory/_scatterplot.py

@@ -6,7 +6,7 @@
 import plotly.colors as clrs
 from plotly.figure_factory import utils
 from plotly.graph_objs import graph_objs
-from plotly.tools import make_subplots
+from plotly.subplots import make_subplots
 
 pd = optional_imports.get_module("pandas")
 

Diff for: packages/python/plotly/plotly/figure_factory/_violin.py

@@ -5,7 +5,7 @@
 from plotly import exceptions, optional_imports
 import plotly.colors as clrs
 from plotly.graph_objs import graph_objs
-from plotly.tools import make_subplots
+from plotly.subplots import make_subplots
 
 pd = optional_imports.get_module("pandas")
 np = optional_imports.get_module("numpy")