```\nfunction removeAllFee() private {\n    if(_taxFee == 0 && _liquidityFee == 0) return;\n    \n    _previousTaxFee = _taxFee;\n    _previousLiquidityFee = _liquidityFee;\n    \n    _taxFee = 0;\n    _liquidityFee = 0;\n}\n```\n