How to remove upload button in Bootstrap File Input

You can just use these following snippets

$("#your-input-type-file-ID").fileinput({
    'showUpload': false
});

Finally found the answer, by simply editing this code here from fileinput.js:

$.fn.fileinput.defaults = {
    language: 'en',
    showCaption: true,
    showPreview: true,
    showRemove: true,
    showUpload: false, // <------ just set this from true to false
    showCancel: true,
    showUploadedThumbs: true,
    // many more below
};

You can do it in a simple way also simply write in an attribute data-show-upload="false" and it I'll work too!!