message: Replace collection.remove with collection.deleteMany
diff: @@ -209,11 +209,11 @@ userSchema.pre('remove', async function () {
  try {
  const promises = [];
  // notifications
  - promises.push(Notification.remove({user: localUser._id}));
  + promises.push(Notification.deleteMany({user: localUser._id}));
  // notificationsettings
  - promises.push(NotificationSettings.remove({user: localUser._id}));
  + promises.push(NotificationSettings.deleteMany({user: localUser._id}));
  // whitelists
  - promises.push(WhitelistUser.remove({uid: localUser.uid}));
  + promises.push(WhitelistUser.deleteMany({uid: localUser.uid}));
  // remove user form courses
  promises.push(Course.updateMany(
  {$or: [
  @@ -226,7 +226,7 @@ userSchema.pre('remove', async function () {
  }
  }));
  // progress
  - promises.push(Progress.remove({user: localUser._id}));
  + promises.push(Progress.deleteMany({user: localUser._id}));
  // image
  const path = localUser.profile.picture.path;
  