fix linting

src/libs/util.ts

@@ -237,19 +237,6 @@ export const generateSaveAndActivateIdentity = async (): Promise<string> => {
   return newId.did;
 };
 
-function getBase64(subscription: PushSubscription, key: PushEncryptionKeyName) {
-  const buffer = subscription.getKey(key);
-  if (!buffer) {
-    return null;
-  }
-  const value = Buffer.from(buffer);
-  return value
-    .toString("base64")
-    .replace(/\+/g, "-")
-    .replace(/\//g, "_")
-    .replace(/=+$/, "");
-}
-
 export const sendTestThroughPushServer = async (
   subscriptionJSON: PushSubscriptionJSON,
   skipFilter: boolean,