Embeded google map, remove points.

Question

I have an embed google map on a webpage not programmed by me, I need to figure out how to remove 2 of the 22 points (blue markers) on the map that when you click on show the address. Is it just a snipit of code somewhere in the HTML or JavaScript? or is it protected by a google account?

<iframe width="666" height="325" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.com/speciallink"&gt;&lt;/iframe&gt;