message: Clean up an MLIRContext comment
diff: @@ -127,11 +127,9 @@ public:
  using AffineMapSet = DenseSet<AffineMap *, AffineMapKeyInfo>;
  AffineMapSet affineMaps;
  - // Affine binary op expression uniquing. We don't need to unique dimensional
  + // Affine binary op expression uniquing. Figure out uniquing of dimensional
  // or symbolic identifiers.
  - // std::tuple doesn't work with DesnseMap!
  - // DenseSet<AffineBinaryOpExpr *, AffineBinaryOpExprKeyInfo>;
  - // AffineExprSet affineExprs;
  + // std::tuple doesn't work with DenseMap!, using nested pair.
  DenseMap<std::pair<unsigned, std::pair<AffineExpr *, AffineExpr *>>,
  AffineBinaryOpExpr *>
  affineExprs;
  