Remove items from homepage

Hi.
My site is-
http://floodrecoveryartauction.co.uk/
I would like to remove the white box on my homepage that says-

Nothing Found

and the text-
Ready to publish your first post? Get started here.
Search for:

and the search box.
Please help me.

Hello there,

Thank you for getting in touch here.

Please refer here.

Regards,
Kharis