[MM-31359] remove duplicated error logs (#16583)

* remove duplicated error logs

* reflect review comments

* add context

* add error details

app/app.go

@@ -371,7 +371,6 @@ func (a *App) notifyAdminsOfWarnMetricStatus(warnMetricId string, isE0Edition bo
 
 		channel, appErr := a.GetOrCreateDirectChannel(bot.UserId, sysAdmin.Id)
 		if appErr != nil {
-			mlog.Error("Cannot create channel for system bot notification!", mlog.String("Admin Id", sysAdmin.Id))
 			return appErr
 		}
 
@@ -484,7 +483,6 @@ func (a *App) NotifyAndSetWarnMetricAck(warnMetricId string, sender *model.User,
 			bodyPage.Props["Title"] = warnMetricDisplayTexts.EmailBody
 
 			if err := mailservice.SendMailUsingConfig(model.MM_SUPPORT_ADVISOR_ADDRESS, subject, bodyPage.Render(), a.Config(), false, sender.Email); err != nil {
-				mlog.Error("Error while sending email", mlog.String("destination email", model.MM_SUPPORT_ADVISOR_ADDRESS), mlog.Err(err))
 				return model.NewAppError("NotifyAndSetWarnMetricAck", "api.email.send_warn_metric_ack.failure.app_error", map[string]interface{}{"Error": err.Error()}, "", http.StatusInternalServerError)
 			}
 		}
@@ -526,7 +524,6 @@ func (a *App) setWarnMetricsStatusForId(warnMetricId string, status string) *mod
 		Name:  warnMetricId,
 		Value: status,
 	}); err != nil {
-		mlog.Error("Unable to write to database.", mlog.Err(err))
 		return model.NewAppError("setWarnMetricsStatusForId", "app.system.warn_metric.store.app_error", map[string]interface{}{"WarnMetricName": warnMetricId}, err.Error(), http.StatusInternalServerError)
 	}
 	return nil
@@ -544,7 +541,6 @@ func (a *App) RequestLicenseAndAckWarnMetric(warnMetricId string, isBot bool) *m
 
 	registeredUsersCount, err := a.Srv().Store.User().Count(model.UserCountOptions{})
 	if err != nil {
-		mlog.Error("Error retrieving the number of registered users", mlog.Err(err))
 		return model.NewAppError("RequestLicenseAndAckWarnMetric", "api.license.request_trial_license.fail_get_user_count.app_error", nil, err.Error(), http.StatusBadRequest)
 	}