Hi
Please I need an answer for this question

I have a site which I am building backlinks to it

I did software submission and I deleted all the confirmation emails that led to lot lot of missing links so my rank went from position 18 to 42 in Google

I have a tool to check my links

so my questions

A) How can I remove those missing links from Google's eye
B) or How long does it take for these missing backlinks to go away