Fix style URL.

Author: SebastianStehle

frontend/src/sdk/shared/config.ts

@@ -6,7 +6,7 @@
  */
 
 import { de, enUS, tr } from 'date-fns/locale';
-import { isDev, isFunction, isNumber, isObject, isString, isUndefined, logWarn } from './utils';
+import { isFunction, isNumber, isObject, isString, isUndefined, logWarn } from './utils';
 
 export const SUPPORTED_LOCALES = {
     en: enUS,
@@ -192,10 +192,6 @@ export function buildSDKConfig(opts: SDKConfig, scriptLocation: string | null |
         options.styleUrl = undefined!;
     }
 
-    if (!options.styleUrl && !isDev()) {
-        options.styleUrl = `${options.apiUrl}/build/notifo-sdk.css`;
-    }
-
     if (!isStringOption(options.serviceWorkerUrl)) {
         logWarn('init.serviceWorkerUrl must be a string if defined.');
         options.serviceWorkerUrl = undefined!;