Use mod vendor for vendored directory (backwards compatible)

vendor/github.com/mattermost/mattermost-server/model/user_search.go

@@ -1,32 +0,0 @@
-// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
-// See License.txt for license information.
-
-package model
-
-import (
-	"encoding/json"
-	"io"
-)
-
-type UserSearch struct {
-	Term           string `json:"term"`
-	TeamId         string `json:"team_id"`
-	NotInTeamId    string `json:"not_in_team_id"`
-	InChannelId    string `json:"in_channel_id"`
-	NotInChannelId string `json:"not_in_channel_id"`
-	AllowInactive  bool   `json:"allow_inactive"`
-	WithoutTeam    bool   `json:"without_team"`
-}
-
-// ToJson convert a User to a json string
-func (u *UserSearch) ToJson() string {
-	b, _ := json.Marshal(u)
-	return string(b)
-}
-
-// UserSearchFromJson will decode the input and return a User
-func UserSearchFromJson(data io.Reader) *UserSearch {
-	var us *UserSearch
-	json.NewDecoder(data).Decode(&us)
-	return us
-}