Asking for the form date and plugin edit option

1. How to remove / hide this text?

https://ibb.co/Zhwg9zT

OR

2. Or How to change the date to 24h and delate selected text (time)?

https://ibb.co/jzn9jnW

My page is: https://fotland.pl/fotobudka-retro/

Thanks in advance for your advice.
Regards,
Andrew

The page I need help with: [log in to see the link]