Chore: Remove unused Go code (#28852)

* Chore: Remove more unused Go code

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

pkg/middleware/middleware_test.go

@@ -574,7 +574,9 @@ func middlewareScenario(t *testing.T, desc string, fn scenarioFunc) {
 			if sc.handlerFunc != nil {
 				sc.handlerFunc(sc.context)
 			} else {
-				c.JsonOK("OK")
+				resp := make(map[string]interface{})
+				resp["message"] = "OK"
+				c.JSON(200, resp)
 			}
 		}
 

pkg/middleware/perf.go

@@ -1,13 +0,0 @@
-package middleware
-
-import (
-	"net/http"
-
-	"github.com/grafana/grafana/pkg/models"
-	"gopkg.in/macaron.v1"
-)
-
-func MeasureRequestTime() macaron.Handler {
-	return func(res http.ResponseWriter, req *http.Request, c *models.ReqContext) {
-	}
-}