message: remove Value::SetNull function
diff: @@ -69,10 +69,6 @@ public:
  return is_null;
  }
  - inline void SetNull() {
  - is_null = true;
  - }
  -
  //! Create the lowest possible value of a given type (numeric only)
  DUCKDB_API static Value MinimumValue(const LogicalType &type);
  //! Create the highest possible value of a given type (numeric only)
  