Kill config in growing.py

manimlib/animation/growing.py

@@ -10,15 +10,19 @@ if TYPE_CHECKING:
 
     from manimlib.mobject.geometry import Arrow
     from manimlib.mobject.mobject import Mobject
+    from manimlib.constants import ManimColor
 
 
 class GrowFromPoint(Transform):
-    CONFIG = {
-        "point_color": None,
-    }
-
-    def __init__(self, mobject: Mobject, point: np.ndarray, **kwargs):
+    def __init__(
+        self,
+        mobject: Mobject,
+        point: np.ndarray,
+        point_color: ManimColor = None,
+        **kwargs
+    ):
         self.point = point
+        self.point_color = point_color
         super().__init__(mobject, **kwargs)
 
     def create_target(self) -> Mobject:
@@ -28,7 +32,7 @@ class GrowFromPoint(Transform):
         start = super().create_starting_mobject()
         start.scale(0)
         start.move_to(self.point)
-        if self.point_color:
+        if self.point_color is not None:
             start.set_color(self.point_color)
         return start
 
@@ -49,9 +53,3 @@ class GrowArrow(GrowFromPoint):
     def __init__(self, arrow: Arrow, **kwargs):
         point = arrow.get_start()
         super().__init__(arrow, point, **kwargs)
-
-
-class SpinInFromNothing(GrowFromCenter):
-    CONFIG = {
-        "path_arc": PI,
-    }