I am using bootstrap date time picker in my web application, made in PHP/HTML5 and JavaScript. I am currently using one from here: http://tarruda.github.io/bootstrap-datetimepic
In my case, the option I used was:
var from = $("input.datepicker").datetimepicker({ format:'Y-m-d', timepicker:false # <- HERE });
I'm using this plugin https://xdsoft.net/jqplugins/datetimepicker/