Method removeUser

src/controller/app.controller.js:110–115

({fingerprint, userId, keyringId})

  }

  async removeUser({fingerprint, userId, keyringId}) {
    const keyring = await keyringById(keyringId);
    const privateKey = keyring.getPrivateKeyByFpr(fingerprint);
    await keyring.removeUser(privateKey, userId);
    await this.sendKeyUpdate();
  }

  async addUser({fingerprint, user, keyringId}) {
    const keyring = await keyringById(keyringId);