style：删除没必要的代码

services/data/cross_variety/chart.go

@@ -16,24 +16,6 @@ import (
 	"time"
 )
 
-type LineEquationDataResp struct {
-	MaxData             float64
-	MinData             float64
-	LatestDate          string `description:"真实数据的最后日期"`
-	EdbInfoCategoryType int
-	ChartColor          string
-	ChartStyle          string
-	PredictChartColor   string
-	ChartType           int
-	ChartWidth          int
-	EdbName             string
-	EdbNameEn           string
-	Unit                string
-	UnitEn              string
-	IsAxis              int
-	DataList            []data_manage.EdbDataList
-}
-
 // ChartInfoResp 截面散点图数据
 type ChartInfoResp struct {
 	XName       string                         `description:"x轴名称"`