I dropped my current Ranking due to Unnatural Link - How to recover pls suggest me

[PRAKASH CHANDRA]

Google Quality Team send me a mail regarding Unnatural Links. I have download backlink details from Google Webmaster and i had found that links so I surprised how can it possible because I have checked my all SEO Off page data. yet I can not remove those links because I am not doing such type of black hat SEO. So please help me how to recover my old ranking.