MM-45542 - do not fail if site url is not set when requesting trial (#20713)

* MM-45542 - do not fail if site url is not set when requesting trial

* remove unnecessary text

Co-authored-by: Pablo Velez Vidal <pablo.velez@mattermost.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/license.go

@@ -71,10 +71,6 @@ func (w *licenseWrapper) RequestTrialLicense(requesterID string, users int, term
 		}
 	}
 
-	if *w.srv.Config().ServiceSettings.SiteURL == "" {
-		return model.NewAppError("RequestTrialLicense", "api.license.request_trial_license.no-site-url.app_error", nil, "", http.StatusBadRequest)
-	}
-
 	trialLicenseRequest := &model.TrialLicenseRequest{
 		ServerID:              w.srv.TelemetryId(),
 		Name:                  requester.GetDisplayName(model.ShowFullName),