Q.Can I hide the shipping method selector on checkout?

Yes. To hide the shipping method selector on checkout, navigate to Operations → Shipping methods. First, you need to deselect all shipping methods but one. Once you do this, an option will appear for Display shipping method selection button. Select Disable here, and then click (Save) at the bottom of the page.

The shipping method selector will no longer appear on the cart screen. Please note that if you enable other shipping methods, the selector will reappear.