delete dead code

Author: ernestoarbitrio

src/cr/cube/matrix/subtotals.py

@@ -491,9 +491,6 @@ def _subtotal_column(self, subtotal, default):
                 counts_subtrahend_sum / base_subtrahend_sum
             )
 
-        if self._diff_cols_nan and len(subtotal.subtrahend_idxs) > 0:
-            return self._nan_subtotals(axis=0)
-
         return default
 
     def _subtotal_row(self, subtotal, default):
@@ -518,9 +515,6 @@ def _subtotal_row(self, subtotal, default):
                 counts_subtrahend_sum / base_subtrahend_sum
             )
 
-        if self._diff_rows_nan and len(subtotal.subtrahend_idxs) > 0:
-            return self._nan_subtotals(axis=1)
-
         return default
 
     def _multiple_subtrahends_or_addends(self, subtotal):