[TIMOB-7696] Android: UI.AlertDialog - removing/ignoring options property if set to prevent picker being added

Problem

When both of the an options (invalid) and buttonNames (valid) properties are defined, both picker and button views are displayed together in the dialog. See attached screenshot. Options are not part of the AlertDialog API, which is in contrast to the OptionDialog API that can show both on Android, and has complimentary click event properties to support it. See [options_dialog.js](https://github.com/appcelerator/titanium_mobile/blob/master/demos/KitchenSink/Resources/examples/options_dialog.js) to demonstrate that it is valid for OptionDialog. I would suggest removing/ignoring the options property if set for AlertDialog. This is not an issue on iOS.

Test case

Ti.UI.setBackgroundColor('white');
var win = Ti.UI.createWindow({  
    title: 'Click window to test',
    backgroundColor: 'white',
	exitOnClose: true,
	fullscreen: false
});

win.addEventListener('click', function(e){
	var opts = {};
	opts = {
		cancel: 2,
		destructive: 1,
		options: ['Confirm', 'Cancel', 'Help'],
		buttonNames: ['Confirm', 'Cancel', 'Help'],
		title: 'Delete File?'
	};
	var dialog = Ti.UI.createAlertDialog(opts).show();
});
win.open();