tentative fix typechecking

yt/visualization/plot_window.py

@@ -7,7 +7,6 @@
 import matplotlib
 import numpy as np
 from more_itertools import always_iterable
-from numpy.typing import ArrayLike
 from unyt.exceptions import UnitConversionError
 
 from yt._maintenance.deprecation import issue_deprecation_warning
@@ -1380,7 +1379,7 @@ class NormalPlot:
     """
 
     @staticmethod
-    def sanitize_normal_vector(ds, normal: str | int | ArrayLike) -> str | np.ndarray:
+    def sanitize_normal_vector(ds, normal) -> str | np.ndarray:
         """Return the name of a cartesian axis whener possible,
         or a 3-element 1D ndarray of float64 in any other valid case.
         Fail with a descriptive error message otherwise.
@@ -1402,7 +1401,7 @@ def sanitize_normal_vector(ds, normal: str | int | ArrayLike) -> str | np.ndarra
                 )
             return axis_names[normal]
 
-        if not is_sequence(normal):  # type: ignore [unreachable]
+        if not is_sequence(normal):
             raise TypeError(
                 f"{normal} is not a valid normal vector identifier. "
                 "Expected a string, integer or sequence of 3 floats."