message: remove TODO comment describing a task that seems infeasible
diff: @@ -330,11 +330,6 @@ def _SvdGrad(op, grad_s, grad_u, grad_v):
  grad_a.set_shape(a_shape)
  return grad_a
  - # TODO(rmlarsen): Define a gradient that is numerically stable for
  - # abs(m-n) > 1. Currently this does not work because there are effectively
  - # multiple singular values with value zero. I am not sure if this is a true
  - # instability or if it simply throws off the finite difference gradient
  - # checker.
  if op.get_attr("full_matrices") and abs(m - n) > 1:
  raise NotImplementedError(
  "svd gradient is not implemented for abs(m - n) > 1 "
  