Hello. I am a solicitor with over 15 years experience. I will try to help you with this.
If you were found not guilty I am not sure what you need to get rid of. Please tell me how I can help.
When did this happen and were you represented by a solicitor?
When a case ends without a trial and without an admission of guilt what has usually happened is that the prosecution have decided not to proceed. In this situation either a case is discharged and a not guilty verdict is entered or the case is left to lie on the file. If it is the latter then the prosecution could be re-opened but only with the permission of the hIgh Court. It is very very unusual for cases which have been left to lie on the file to be re-opened.
Occasionally cases will be stayed (eg if there has been an abuse of process by the prosecution) but this unusual and the effect is to put the prosection into a state of permanent limbo.
The likelihood is that there is no outstanding case and obviously no criminal record from it so probably nothing to get rid of.