Contact form 7 remove default validation for radio button

Question

I want to prevent default required validation for radio button in contact form 7 WordPress.

check below image this both field is not mandatory still its give me ("This field required message and prevent the form from submitting")

Answer 1

There is no way using radio button but we can achieve the same thing using contact form checkbox exclusive property

[checkbox your-country exclusive "China" "India" "San Marino"]

And Using CSS I made checkbox look like as radio button.

click here for more information