[items] Fix issue with removeItem()

[florian-h05]

Bugfix

Fixes #120.

The check that should verify that the Item successfully has been removed,
has thrown an ItemNotFouncException which was not caught.

Signed-off-by: Florian Hotze florianh_dev@icloud.com

Testing

for (var i = 0; i < 4; i++) {
  items.replaceItem({
    name: 'test' + i,
    type: 'Switch'
  });
}

items.removeItem('test5'); // Item does not exist, should log error.

var cleanup_items = true; 
if (cleanup_items) {
  var item_list = items.getItemsByTag('_DYNAMIC_');
  console.log(item_list.map(item => item.name).toString());
  item_list.forEach((item) => {
      items.removeItem(item.name)
      console.log('Deleted:' + item.name)
  })
}

[digitaldan]

lgtm