How do I remove the trailing time zeros after the Date
Go to 'yoursite/admin/config/regional/date-time' and click the button, '+ Add Format' to add a new date format.

Enter a name for this new format and add your date format in the Format string box.

Example: D, M j, Y will output Fri, Dec 22, 2017. Click Add Format

Go to your Webform > build and select the date element you want format with your new date format. In the Advanced tab, select your new date format in the SUBMISSION DISPLAY > SINGLE ITEM > ITEM FORMAT box and save.

You should also be able to select the new date format in Views.

Its best to clear the cache at yoursite/admin/config/development/performance