Delete things from template

[Chris Henderson]

I am using gnucash version 2.4.11 on os x mountain lion.

My mistake I have added a wrong stock detail in the template under
tools - security editor. Now every time I try to get an online quote
it gives an error saying unable to retrieve. I know that I can delete
things from the template by editing the xml file (source:
http://gnucash.1415818.n4.nabble.com/setting-up-stock-non-us-exchange-td4477753.html)
but I am not sure which xml file to edit.

Could anyone please help.

Thanks.