[TIMOB-23447] Android: Optimize removeAllChildren()

theWindow.removeAllChildren();

var win = Ti.UI.createWindow({
    backgroundColor: "white"
});

var view = Ti.UI.createView({
    top: 0,
    left: 0,
    right: 0,
    height: 100,
    layout: "horizontal"
});

var scrollview = Ti.UI.createScrollView({
    top: 100,
    left: 0,
    right: 0,
    height: 100,
    layout: "horizontal",
    type: "horizontal"
});

for (var i = 0; i < 100; i++) {
    var v = Ti.UI.createView({
        width: 10,
        height: 10,
        backgroundColor: "red",
        left: 10
    });
    view.add(v);
    v = null;

    var v2 = Ti.UI.createView({
        width: 10,
        height: 10,
        backgroundColor: "red",
        left: 10
    });
    scrollview.add(v2);
    v2 = null;
}

// Listview

var listView = Ti.UI.createListView({
    top: 200,
    height: 100
});
var sections = [];

var fruitSection = Ti.UI.createListSection({
    headerTitle: 'Fruits'
});
var fruitDataSet = [{
    properties: {
        title: 'Apple'
    }
}, {
    properties: {
        title: 'Banana'
    }
}, ];
fruitSection.setItems(fruitDataSet);
sections.push(fruitSection);

var vegSection = Ti.UI.createListSection({
    headerTitle: 'Vegetables'
});
var vegDataSet = [{
    properties: {
        title: 'Carrots'
    }
}, {
    properties: {
        title: 'Potatoes'
    }
}, ];
vegSection.setItems(vegDataSet);
sections.push(vegSection);

listView.sections = sections;

var fishSection = Ti.UI.createListSection({
    headerTitle: 'Fish'
});
var fishDataSet = [{
    properties: {
        title: 'Cod'
    }
}, {
    properties: {
        title: 'Haddock'
    }
}, ];
fishSection.setItems(fishDataSet);

function onOpen(e) {
    var startTime = new Date();
    console.log("View length: " + view.getChildren().length);
    view.removeAllChildren();
    console.log("View after remove length: " + view.getChildren().length);

    console.log("ScrollView length: " + scrollview.getChildren().length);
    scrollview.removeAllChildren();
    console.log("ScrollView after remove length: " + scrollview.getChildren().length);

    console.log("ListView length: " + listView.getSections().length);
    listView.removeAllChildren();
    console.log("ListView after remove length: " + listView.getSections().length);
    
    var endTime = new Date();
	var delta = endTime - startTime;
    alert('time ' + delta + 'ms');
}

win.add(listView);
win.add(view);
win.add(scrollview);
win.addEventListener("open", onOpen);
win.open();