How to remove/hide 'to time' in time field I need to show only one time, no need of start and end time. Or I need to show only start time. Please anyone help me on this.
You can change in the field setting

Go to your content type, Now when we add a field of Date type. Then it will show a section for start and end date mentioned in the image



For already added field, you can not edit it i think because there is already content with end date. You can hide it if neccessary

Hope it will help!