Delete data from Firebase Database - firebase

Question

Hello I wanted to delete record from the realtime firebase database.I have got the key which I wanted to delete, but when I call remove function on reference is shows me error "Reference.remove failed: first argument must be a valid function."
i had refer this docs.
here is my code:
home-customer.ts
deleteLoad(load) {
this.AuthProvider.removeNote(load.key).then(() => {
this.navCtrl.setRoot('HomeCustomerPage');
});
}
home-customer.html
<ion-list *ngFor="let load of LoadMaster">
<ion-item>
Source:
{{load.Source}}
</ion-item>
<ion-item>
Destination:
{{load.Destination}}
</ion-item>
<ion-item>
Load Type:
{{load.LoadType}}
</ion-item>
<button ion-button block (click)="UpdateLoad(load.key)">
Update
</button>
<button ion-button block (click)="deleteLoad(load)">
Delete
auth.ts
removeNote(key) {
console.log('key'+key);
return firebase.database().ref(`/LoadMaster/`).remove(key);
}

Answer 1

It's very sad since more then 3 year no answer...I think this answer will now help to others...
`var adaRef = firebase.database().ref('users/ada');
adaRef.remove()
.then(function() {
console.log("Remove succeeded.")
})
.catch(function(error) {
console.log("Remove failed: " + error.message)
});`
More can be found Firebase documentation