fix feature 3d animation bugs

Author: yifanfeng97

dhg/visualization/__init__.py

@@ -1,7 +1,7 @@
 # feature visualization
 from .feature import draw_in_euclidean_space, draw_in_poincare_ball
 from .feature import animation_of_3d_euclidean_space, animation_of_3d_poincare_ball
-from .feature import make_animation, project_to_poincare_ball
+from .feature import project_to_poincare_ball
 # structure visualization
 from .structure import draw_graph, draw_digraph, draw_bigraph, draw_hypergraph
 
@@ -10,7 +10,6 @@
     "draw_in_poincare_ball",
     "animation_of_3d_euclidean_space",
     "animation_of_3d_poincare_ball",
-    "make_animation",
     "project_to_poincare_ball",
     "draw_graph",
     "draw_digraph",