Removes clipping from ravel_multi_index

It has already been clipped above

Author: jcapriot

discretize/tensor_mesh.py

@@ -778,9 +778,7 @@ def point2index(self, locs):  # NOQA D102
             for n, p in zip(cell_bounds, locs.T)
         )
         # and of course, we are fortran ordered in a tensor mesh.
-        return np.ravel_multi_index(
-            multi_inds, self.shape_cells, order="F", mode="clip"
-        )
+        return np.ravel_multi_index(multi_inds, self.shape_cells, order="F")
 
     def _repr_attributes(self):
         """Represent attributes of the mesh."""