fix:删除ChartBackgroundColor属性 (#27)

Signed-off-by: hongtenglong <hongtenglong1@h-partners.com>
Co-authored-by: hongtenglong <hongtenglong1@h-partners.com>

Author: tenglonghh

harmony/charts-wrapper/src/main/ets/BarLineBaseChart.ets

@@ -71,10 +71,7 @@ export const setBarLineChart = <T extends model, U extends RNChart>(descriptorWr
   if (props.gridBackgroundColor != undefined) {
     model.setGridBackgroundColor(props.gridBackgroundColor)
   }
-  //设置图表背景 chartBackgroundColor
-  if(props.chartBackgroundColor!=undefined){
-    model.setGridBackgroundColor(props.chartBackgroundColor)
-  }
+
   //是否设置边框 drawBorders
   if (props.drawBorders != undefined) {
     model.setDrawBorders(props.drawBorders);