removed changelog, added deprecated annotation

CHANGELOG.md

@@ -1,6 +1,3 @@
-## UNRELEASED
-* **IMPROVEMENT** (by @MattiaPispisa) custom border radius in BarTouchTooltipData, #1715
-
 ## 0.69.0
 * **BUGFIX** (by @imaNNeo) Fix a memory leak issue in the axis-based charts, there was a logic to calculate and cache the minX, maxX, minY and maxY properties to reduce the computation cost. But it caused some memory issues, as we don't have a quick solution for this, we disabled the caching logic for now, later we can move the calculation logic to the render objects to keep and update them only when the data is changed, #1106, #1693
 * **BUGFIX**  (by @imaNNeo) Fix showing grid lines even when there is no line to show in the LineChart, #1691

lib/src/chart/bar_chart/bar_chart_data.dart

@@ -738,6 +738,7 @@ class BarTouchTooltipData with EquatableMixin {
         super();
 
   /// Sets a rounded radius for the tooltip.
+  @Deprecated('use tooltipBorderRadius instead')
   final double tooltipRoundedRadius;
 
   /// Sets a border radius for the tooltip.