How to remove books?

As I found out about 2 weeks ago, my GR library was and still is magnificently screwed up by GR team in charge.

I have straightened it up as much as I could, though the numbers still don't add up, and would like to re-load the whole thing on BookLikes. 

 

Does anyone know how to remove the entire library from BL?

Mammarella

Currently reading

Best Kept Lies
Helena Maeve
Brethren
W.A. Hoffman
Progress: 3 %
The Virtu
Sarah Monette
Progress: 30 %
Orochi no Kishi
Itoshi, Lehanan Aida
Progress: 80 %