[TIMOB-2385] Android: tabGroup removeTab() method has no effect

The following usecase demonstrates that the removeTab() method currently does not work. In the code, I've created a button that listens for a click event that attempts to remove tab2 using removeTab(tab2), so any output can be observed using logcat. The tab is not removed. I've also tried removeTab outside of the eventlistener, both before and after the tabgroup is opened, with the same result.

var tabGroup1 = Titanium.UI.createTabGroup();

var win1 = Titanium.UI.createWindow({
    title:'Tab 1',
    backgroundColor:'#fff'
});

var tab1 = Titanium.UI.createTab({
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
});

var button1 = Ti.UI.createButton({
    title:'close tab',
    top:100,
    height:30,
    width:120
});

win1.add(button1);

var win2 = Titanium.UI.createWindow({
    title:'Tab 2',
    backgroundColor:'#fff'
});
var tab2 = Titanium.UI.createTab({
    icon:'KS_nav_ui.png',
    title:'Tab 2',
    window:win2
});

button1.addEventListener('click', function(e){
    tabGroup1.removeTab(tab2);
});

tabGroup1.addTab(tab1);
tabGroup1.addTab(tab2);

tabGroup1.open();
tabGroup1.removeTab(tab2);