Delete ImageButton in ScrollView on Android

We are developing a communication board for people with a certain degree of difficulty, being able to communicate through a communication board. In case you might inadvertently add more than one image (get duplicate), then I would need to delete this last button.

As the use is for those who have a certain degree of difficulty, we think of leaving the delete function on a button (as indicated in the image circled in red), when pressed, delete the last ImageButton added.

Any ideas how to do this? It is added to a LinearLayout in a ScroolView.

Below is the code to add the

//Função para Criar Botões
    protected void criaBotoes(final int idBotao, final int posicaoX, final int posicaoY, final int altura, final int largura, int tipoLayout, int tipoBotao, String pathArquivo, final int tagBotao) {
        AssetManager manager = getAssets(); //Pasta onde ficam os arquivos a serem carregados ( Imagens )

        //Carrega Imagens dinamicamente
        InputStream open = null;
        try {
            open = manager.open(pathArquivo);                 //Seta nome para carregar o arquivo
            Bitmap bitmap = BitmapFactory.decodeStream(open); //Seta objeto para controle de imagem

            //Cria Layout Params ( "Fatias no layout para adiocionar cada botão )
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

            //Seta posições e tamanho do Botão
            params.leftMargin = posicaoX;
            params.topMargin  = posicaoY;
            params.width      = altura;
            params.height     = largura;

            ImageButton botaoImg = new ImageButton(this); //Cria Botão Dinamicamente
            botaoImg.setId(idBotao);                      //Seta propriedade ID para cada usuário, para ser usado no "Click"
            botaoImg.setTag(tagBotao);                    //**
            botaoImg.setBackgroundResource(0);            //Deixa botão sem bordas

            botaoImg.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    int id  = v.getId();
                    int tag = (int) v.getTag();
                    //...
                }
            });

            botaoImg.setImageBitmap(bitmap);  //Seta objeto de imagem para o Botão
            botaoImg.setLayoutParams(params); //Seta layout para o botão ( "Fatias"  para cada botão )

            ll.addView(botaoImg); //Adiciona Botão no Layout (Linear)
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

criaBotoes(seqBotoesSel, posX, posY, altura, largura, 1, 1, pathAquivo, 0);  
sv.addView(ll); //adiciona botão na ScrollView