migrations: remove unused function and fix compile error

gogs.go

@@ -16,7 +16,7 @@ import (
 	"github.com/gogits/gogs/pkg/setting"
 )
 
-const APP_VER = "0.11.36.0308"
+const APP_VER = "0.11.37.0309"
 
 func init() {
 	setting.AppVer = APP_VER

models/migrations/migrations.go

@@ -133,13 +133,6 @@ In case you're stilling getting this notice, go through instructions again until
 	return nil
 }
 
-func sessionRelease(sess *xorm.Session) {
-	if !sess.IsCommitedOrRollbacked {
-		sess.Rollback()
-	}
-	sess.Close()
-}
-
 func generateOrgRandsAndSalt(x *xorm.Engine) (err error) {
 	type User struct {
 		ID    int64  `xorm:"pk autoincr"`

templates/.VERSION

@@ -1 +1 @@
-0.11.36.0308
+0.11.37.0309