message: delete EnableLinOp convert_to due to impl in dense
diff: @@ -132,8 +132,6 @@ class Dense
  friend class Dense<to_complex<ValueType>>;
  public:
  - using EnableLinOp<Dense>::convert_to;
  - using EnableLinOp<Dense>::move_to;
  using ReadableFromMatrixData<ValueType, int32>::read;
  using ReadableFromMatrixData<ValueType, int64>::read;
  