Remove old checkerboard from components

stimuli/components/components.py

@@ -231,26 +231,6 @@ def square_wave(
     return stim
 
 
-def checkerboard(
-        ppd=10,
-        board_shape=(8, 8),
-        check_size=1.0,
-        vcheck1=0.0,
-        vcheck2=1.0,
-        ):
-
-    check_size_px = degrees_to_pixels(check_size, ppd)
-    nchecks_height, nchecks_width = board_shape
-
-    img = np.ndarray((nchecks_height, nchecks_width))
-
-    for i, j in np.ndindex((nchecks_height, nchecks_width)):
-        img[i, j] = vcheck1 if i % 2 == j % 2 else vcheck2
-
-    img = img.repeat(check_size_px, axis=0).repeat(check_size_px, axis=1)
-    return img
-
-
 def disc_and_rings(
         ppd=20,
         radii=(3, 6, 9),