Fix Activity Page Contributors dropdown (#31264)

Fix #31261

routers/web/repo/contributors.go

@@ -19,14 +19,8 @@ const (
 // Contributors render the page to show repository contributors graph
 func Contributors(ctx *context.Context) {
 	ctx.Data["Title"] = ctx.Tr("repo.activity.navbar.contributors")
-
 	ctx.Data["PageIsActivity"] = true
 	ctx.Data["PageIsContributors"] = true
-
-	ctx.PageData["contributionType"] = "commits"
-
-	ctx.PageData["repoLink"] = ctx.Repo.RepoLink
-
 	ctx.HTML(http.StatusOK, tplContributors)
 }