refactor: 去掉视图自有背景属性

frontend/src/views/chart/chart/chart.js

@@ -674,8 +674,7 @@ export const BASE_CHART_STRING = {
     legend: DEFAULT_LEGEND_STYLE,
     xAxis: DEFAULT_XAXIS_STYLE,
     yAxis: DEFAULT_YAXIS_STYLE,
-    yAxisExt: DEFAULT_YAXIS_EXT_STYLE,
-    background: DEFAULT_BACKGROUND_COLOR
+    yAxisExt: DEFAULT_YAXIS_EXT_STYLE
   }),
   customFilter: '[]'
 }
@@ -698,8 +697,7 @@ export const BASE_CHART = {
     legend: DEFAULT_LEGEND_STYLE,
     xAxis: DEFAULT_XAXIS_STYLE,
     yAxis: DEFAULT_YAXIS_STYLE,
-    yAxisExt: DEFAULT_YAXIS_EXT_STYLE,
-    background: DEFAULT_BACKGROUND_COLOR
+    yAxisExt: DEFAULT_YAXIS_EXT_STYLE
   },
   customFilter: []
 }

frontend/src/views/chart/view/ChartEdit.vue

@@ -1178,7 +1178,6 @@ import bus from '@/utils/bus'
 import DatasetChartDetail from '../../dataset/common/DatasetChartDetail'
 // shape attr,component style
 import {
-  DEFAULT_BACKGROUND_COLOR,
   DEFAULT_COLOR_CASE,
   DEFAULT_FUNCTION_CFG,
   DEFAULT_LABEL,
@@ -1333,7 +1332,6 @@ export default {
           xAxis: DEFAULT_XAXIS_STYLE,
           yAxis: DEFAULT_YAXIS_STYLE,
           yAxisExt: DEFAULT_YAXIS_EXT_STYLE,
-          background: DEFAULT_BACKGROUND_COLOR,
           split: DEFAULT_SPLIT
         },
         senior: {