fix: #303 of cycle eff tooltip. Change background chart grid lines.

src/views/Discover/Performance/index.vue

@@ -154,7 +154,7 @@ import { simpleTimeLabel, followTimeLabel, getDateLabelByMinMaxDate,
   getYTicksByIndex,
  } from '@/module/timeLabel.js';
 import FreqChart from './FreqChart.vue';
-import { PRIME_VUE_TICKS_LIMIT } from '../../../constants/constants.js';
+import { PRIME_VUE_TICKS_LIMIT, GRID_COLOR } from '../../../constants/constants.js';
 
 const primeVueTicksLimit = PRIME_VUE_TICKS_LIMIT;
 const knownScaleLineChartOptions = {
@@ -513,7 +513,9 @@ export default {
             border: {
               color: '#64748b',
             },
-
+            grid: {
+              display: false,
+            },
           },
           y: {
             beginAtZero: true, // scale 包含 0