Remove obsolete leftover

python/dune/perftool/sumfact/symbolic.py

@@ -442,18 +442,6 @@ class VectorizedSumfactKernel(SumfactKernelBase, ImmutableRecord, prim.Variable)
                 return i
         return 0
 
-    def _sliced_expr(self):
-        quad_inames = quadrature_inames()
-        index = []
-        i = 0
-        sliced = 0
-        for d in range(world_dimension()):
-            if self.matrix_sequence[d].face is None:
-                if self.matrix_sequence[d].slice_size:
-                    return prim.Variable(quad_inames[i])
-                i = i + 1
-        return 0
-
     def _quadrature_index(self, sf):
         # Traverse all the quadrature inames and map them to their correct direction
         quad_inames = quadrature_inames()