restrict session usage to auth_proxy

pkg/middleware/auth.go

@@ -7,7 +7,6 @@ import (
 	"gopkg.in/macaron.v1"
 
 	m "github.com/grafana/grafana/pkg/models"
-	"github.com/grafana/grafana/pkg/services/session"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/util"
 )
@@ -17,16 +16,6 @@ type AuthOptions struct {
 	ReqSignedIn     bool
 }
 
-func getRequestUserId(c *m.ReqContext) int64 {
-	userID := c.Session.Get(session.SESS_KEY_USERID)
-
-	if userID != nil {
-		return userID.(int64)
-	}
-
-	return 0
-}
-
 func getApiKey(c *m.ReqContext) string {
 	header := c.Req.Header.Get("Authorization")
 	parts := strings.SplitN(header, " ", 2)