Remove migration support from versions earlier than 1.6.0 (#10026)

* Remove migration support from versions earlier than 1.6.0

* Remove unused functions

* Update gogs upgrade instructions

* Improve "latest" link as per @jolheiser

Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

1 files changed, 0 insertions, 59 deletions

diff --git a/models/migrations/v39.go b/models/migrations/v39.go
deleted file mode 100644
index e0b84b969c..0000000000
--- a/models/migrations/v39.go
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright 2017 The Gitea Authors. All rights reserved.
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file.
-
-package migrations
-
-import (
-	"fmt"
-
-	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/git"
-	"code.gitea.io/gitea/modules/log"
-	"code.gitea.io/gitea/modules/repository"
-
-	"xorm.io/xorm"
-)
-
-// ReleaseV39 describes the added field for Release
-type ReleaseV39 struct {
-	IsTag bool `xorm:"NOT NULL DEFAULT false"`
-}
-
-// TableName will be invoked by XORM to customrize the table name
-func (*ReleaseV39) TableName() string {
-	return "release"
-}
-
-func releaseAddColumnIsTagAndSyncTags(x *xorm.Engine) error {
-	if err := x.Sync2(new(ReleaseV39)); err != nil {
-		return fmt.Errorf("Sync2: %v", err)
-	}
-
-	// For the sake of SQLite3, we can't use x.Iterate here.
-	offset := 0
-	pageSize := models.RepositoryListDefaultPageSize
-	for {
-		repos := make([]*models.Repository, 0, pageSize)
-		if err := x.Table("repository").Cols("id", "name", "owner_id").Asc("id").Limit(pageSize, offset).Find(&repos); err != nil {
-			return fmt.Errorf("select repos [offset: %d]: %v", offset, err)
-		}
-		for _, repo := range repos {
-			gitRepo, err := git.OpenRepository(repo.RepoPath())
-			if err != nil {
-				log.Warn("OpenRepository: %v", err)
-				continue
-			}
-
-			if err = repository.SyncReleasesWithTags(repo, gitRepo); err != nil {
-				log.Warn("SyncReleasesWithTags: %v", err)
-			}
-			gitRepo.Close()
-		}
-		if len(repos) < pageSize {
-			break
-		}
-		offset += pageSize
-	}
-	return nil
-}