How to remove iOS 7 Grey Line voiceover mode In order to be able to use a clicker with my iPad, so that I can do proper formal business presentations with Keynote, I am using this Satechi Bluetooth Clicker.
http://www.satechi.net/index.php/satechi-bluetooth-smart-pointer-mobile-presenter-black-and-remote-control-for-iphone-ipad-ipod-touch-samsung-galaxy-s3-note-2-imac-macbook-air-macbook-pro-macbook-mac-mini-and-apple-tv-3

It works perfectly, it works by enabling VoiceOver in accessibility mode and setting the clicker to accessibility mode.

This allows me to advance slides using the clicker.

One issue that arises however is that this grey line appears on all of the slides. It is as if voiceover is selecting/hovering over the slides. How do I remove this grey line?
I am willing to jailbreak if neccessary.

Image of greyline: 

The grey line appears on every single slide. You can see it there below number 1. It is always in the same place.

Thanks.
I can't see the picture because I'm blind, but, I think you are talking about the VoiceOver cursor. Currently on iOS there is no way to hide it while VoiceOver is on. On the Mac there is. I am not currently at my Mac to tell you exactly where it's at in settings, but I can later if needed.