增加Remove All Chart Object移除图表下的所有子节点

Runtime/API/BaseGraph_API.cs

@@ -134,5 +134,13 @@ namespace XCharts
             warningInfo = CheckHelper.CheckChart(this);
             return warningInfo;
         }
+
+        /// <summary>
+        /// 移除所有图表子节点，会自动重现初始化。
+        /// </summary>
+        public void RemoveChartObject()
+        {
+            ChartHelper.DestroyAllChildren(transform);
+        }
     }
 }

Runtime/Internal/CoordinateChart.cs

@@ -1543,7 +1543,6 @@ namespace XCharts
                     }
                     else
                     {
-                        Debug.LogError("lable not show:" + i + "," + j);
                         serieData.SetLabelActive(false);
                     }
                 }