Requesting localhost to load am image on a live site

I have a live site which is working absolutely fine but there is an error coming on browser console I have found this error

http://ift.tt/1DtCsUN

this is asking for an image from localhost although my site is live on server . I have download the whole wp in my local system but i could not find file with this name and the more annoying thing is that this image keep on sending request even after the page is loaded screen shot after a minute .

http://ift.tt/1E8u6Y7

can anyone assist me how to find or resolve this issue??

Thanks