Remove unused models

pkg/datasource/response_models.go

@@ -1,21 +0,0 @@
-package datasource
-
-type Trend []TrendPoint
-
-type TrendPoint struct {
-	ItemID   string `json:"itemid,omitempty"`
-	Clock    int64  `json:"clock,omitempty,string"`
-	Num      string `json:"num,omitempty"`
-	ValueMin string `json:"value_min,omitempty"`
-	ValueAvg string `json:"value_avg,omitempty"`
-	ValueMax string `json:"value_max,omitempty"`
-}
-
-type History []HistoryPoint
-
-type HistoryPoint struct {
-	ItemID string  `json:"itemid,omitempty"`
-	Clock  int64   `json:"clock,omitempty,string"`
-	Value  float64 `json:"value,omitempty,string"`
-	NS     int64   `json:"ns,omitempty,string"`
-}