去掉echerts背景色

packages/conv/creditScore/AppGridMemberScore/components/gridScoreDetail.vue

@@ -206,16 +206,12 @@ export default {
           data: xData,
         },
         yAxis: {
-          type: 'value'
+          type: 'value',
         },
         series: [
           {
             data: yData,
             type: 'bar',
-            showBackground: true,
-            backgroundStyle: {
-              color: 'rgba(180, 180, 180, 0.2)'
-            },
             itemStyle: {
               normal: {
                 color: "#5087ec",