text: const getUser = require('./getUser');
  const removeUserCopies = require('../book/removeAllUserCopies');
  const strings = require('../../static/strings');
  
  module.exports = async (user_id) => {
    const user = await getUser(user_id);
    if (!user) {
      return strings.NO_DATA;
    }
    await removeUserCopies(user_id);
    await user.remove();
    return strings.SUCCESS;
  };
  