[GH-10800] convert bot account to user account (#10803)

* [10800] convert bot account to user account

* check password validity first

* review comments

store/sqlstore/bot_store.go

@@ -233,12 +233,6 @@ func (us SqlBotStore) Update(bot *model.Bot) store.StoreChannel {
 // If the corresponding user is to be deleted, it must be done via the user store.
 func (us SqlBotStore) PermanentDelete(botUserId string) store.StoreChannel {
 	return store.Do(func(result *store.StoreResult) {
-		userResult := <-us.User().PermanentDelete(botUserId)
-		if userResult.Err != nil {
-			result.Err = userResult.Err
-			return
-		}
-
 		if _, err := us.GetMaster().Exec(`
 			DELETE FROM
 			    Bots