Of course you can also delete files from Firebase Storage.
Delete a File
To delete a file, first
create a reference.
to that file. Then call the delete() method on that reference.
// Create a storage reference from our app
StorageReference storageRef = storage.getReferenceFromUrl("gs://");
// Create a reference to the file to delete
StorageReference desertRef = storageRef.child("images/desert.jpg");
// Delete the file
desertRef.delete().addOnSuccessListener(new OnSuccessListener() {
@Override
public void onSuccess(Void aVoid) {
// File deleted successfully
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
// Uh-oh, an error occurred!
}
});
Handle Errors
There are a number of reasons why errors may occur on file deletes, including the file not existing, or the user not having permission to delete the desired file. More information on errors can be found in the Handle Errors section of the docs.

