Update line_chart.md

Line chart data does not have axisTitleData, this is in response to this thread #1201

repo_files/documentations/line_chart.md

@@ -22,7 +22,6 @@ When you change the chart's state, it animates to the new state internally (usin
 |lineBarsData| list of [LineChartBarData ](#LineChartBarData ) to show the chart's lines, they stack and can be drawn on top of each other|[]|
 |betweenBarsData| list of [BetweenBarsData](#BetweenBarsData ) to fill the area between 2 chart lines|[]|
 |titlesData| check the [FlTitlesData](base_chart.md#FlTitlesData)| FlTitlesData()|
-|axisTitleData| check the [FlAxisTitleData](base_chart.md#FlAxisTitleData)| FlAxisTitleData()|
 |extraLinesData| [ExtraLinesData](base_chart.md#ExtraLinesData) object to hold drawing details of extra horizontal and vertical lines. Check [ExtraLinesData](base_chart.md#ExtraLinesData)|ExtraLinesData()|
 |lineTouchData| [LineTouchData](#linetouchdata-read-about-touch-handling) holds the touch interactivity details| LineTouchData()|
 |rangeAnnotations| show range annotations behind the chart, check [RangeAnnotations](base_chart.md#RangeAnnotations) | RangeAnnotations()|