Revert "add layers, add missing model."

This reverts commit 7d152b2cd1.

plugin/api_timer_layer_generated.go

@@ -11,8 +11,8 @@ import (
 	"net/http"
 	timePkg "time"
 
-	"github.com/mattermost/mattermost-server/v6/model"
 	"github.com/mattermost/mattermost-server/v6/server/channels/einterfaces"
+	"github.com/mattermost/mattermost-server/v6/model"
 )
 
 type apiTimerLayer struct {