removeFromQueue(value) {
            var index = this.getIndexOfItem(value);
            var item = this.queue[index];
            if(item.isUploading) item.cancel();
            this.queue.splice(index, 1);
            item._destroy();
            this.progress = this._getTotalProgress();
        }
Remove items from the queue. Remove last: index = -1
@param {FileItem|Number} value