Remove unused constant var

Author: tomvothecoder

xcdat/regridder/regrid2.py

@@ -4,13 +4,9 @@
 import xarray as xr
 
 import xcdat as xc
-from xcdat.axis import VAR_NAME_MAP, get_dim_keys
+from xcdat.axis import get_dim_keys
 from xcdat.regridder.base import BaseRegridder, _preserve_bounds
 
-# Spatial axes keys used to map to the axes in an input data variable to build
-# the output variable.
-VALID_SPATIAL_AXES_KEYS = ["X", "Y"] + VAR_NAME_MAP["X"] + VAR_NAME_MAP["Y"]
-
 
 class Regrid2Regridder(BaseRegridder):
     def __init__(