no reason to add dask dep just for this. hopefully the attr check aco…

…mplishes what we want here.

rex/utilities/bc_utils.py

@@ -4,7 +4,6 @@
 """
 import logging
 
-import dask.array as da
 import numpy as np
 import scipy
 
@@ -193,7 +192,7 @@ def _clean_params(self, params, arr_shape):
         """
 
         msg = f'params must be 2D array but received {type(params)}'
-        assert isinstance(params, (np.ndarray, da.core.Array)), msg
+        assert isinstance(hasattr(params, 'shape')), msg
 
         if len(params.shape) == 1:
             params = np.expand_dims(params, 0)