message: Remove unused commented out code
diff: @@ -429,9 +429,6 @@ where
  // FIXME: Ugly type signatures - blocked by rust-lang/rust#24092
  Self: Index<usize, Output = <Self as Matrix>::Column>,
  Self: IndexMut<usize, Output = <Self as Matrix>::Column>,
  - //Self: approx::AbsDiffEq<Epsilon = <Self as VectorSpace>::Scalar>,
  - //Self: approx::RelativeEq<Epsilon = <Self as VectorSpace>::Scalar>,
  - //Self: approx::UlpsEq<Epsilon = <Self as VectorSpace>::Scalar>,
  {
  /// The row vector of the matrix.
  type Row: VectorSpace<Scalar = Self::Scalar> + Array<Element = Self::Scalar>;
  