chore(i18n): cleanup `settings.adopt` string (#7451)

The translation of `settings.adopt` is not actually used, it is set as the title for a POST handler that does not actually render any template. It does render the the 'Internal server error' template, however for safety reasons it does not use the set context data.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7451
Reviewed-by: 0ko <[e-mail]>
Co-authored-by: Gusted <[e-mail]>
Co-committed-by: Gusted <[e-mail]>

options/locale_next/locale_en-US.json

···
     "error.not_found.title": "Page not found",
     "alert.asset_load_failed": "Failed to load asset files from {path}. Please make sure the asset files can be accessed.",
     "alert.range_error": " must be a number between %[1]s and %[2]s.",
-    "settings.adopt": "Adopt",
     "install.invalid_lfs_path": "Unable to create the LFS root at the specified path: %[1]s",
     "install.lfs_jwt_secret_failed": "Unable to generate a LFS JWT secret: %[1]s"
 }

routers/web/user/setting/adopt.go

···
 
 // AdoptOrDeleteRepository adopts or deletes a repository
 func AdoptOrDeleteRepository(ctx *context.Context) {
-	ctx.Data["Title"] = ctx.Tr("settings.adopt")
-	ctx.Data["PageIsSettingsRepos"] = true
 	allowAdopt := ctx.IsUserSiteAdmin() || setting.Repository.AllowAdoptionOfUnadoptedRepositories
-	ctx.Data["allowAdopt"] = allowAdopt
 	allowDelete := ctx.IsUserSiteAdmin() || setting.Repository.AllowDeleteOfUnadoptedRepositories
-	ctx.Data["allowDelete"] = allowDelete
 
 	dir := ctx.FormString("id")
 	action := ctx.FormString("action")