That file is in your System Restore cache, and neither readily accessible/readily manipulated by you nor capable of accessing your system, unless the Restore Point with which it is associated is invoked. Unless you're up for a buncha pretty knowledgeably geeky fooling around (which I don't recommend unless you don't need to be talked through it, which by your question is not likely and which I won't go into on a general user web discussion), the best way to get rid of a file in System Restore is to
Disable/Re-enable System Restore. Make sure your machine is operating satisfactorily, then disable System Restore, which will remove all Restore Points. Reboot, re-enable System Restore, and manually set a new Restore Point, either via Start>All Programs>Accessories>System Tools>System Restore> place a click in "Create a Restore Point", click "Next" and proceed according to the prompts, or via Start>Run> type (or copy & paste), without the quotes, "
msconfig", click "OK" or hit [ENTER], click the "Launch System Restore" bar, place a click in "Create a Restore Point", click "Next", and proceed according to the prompts.