chore: remove broken gitea-format-imports (#20952)

build/gitea-format-imports.go

@@ -1,26 +0,0 @@
-// Copyright 2021 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.
-
-//go:build ignore
-
-package main
-
-import (
-	"log"
-	"os"
-
-	"code.gitea.io/gitea/build/codeformat"
-)
-
-func main() {
-	if len(os.Args) <= 1 {
-		log.Fatalf("Usage: gitea-format-imports [files...]")
-	}
-
-	for _, file := range os.Args[1:] {
-		if err := codeformat.FormatGoImports(file); err != nil {
-			log.Fatalf("can not format file %s, err=%v", file, err)
-		}
-	}
-}