You can't delete them with the Home version, but you can have them moved to the virus chest.
Click on Standard Shield and then on Customize.
Go to Advanced tab and select Silent Mode and the default answer No.
Personally I don't use silent mode, because I want to know what is going on with my system. If someone is getting so many warnings of virus infection, infected emails, etc. that they become intrusive, then it is time to review their security practice - filter emails at source, delete from server rather than download them, sites they visit, etc.
Leave the file in the chest for a week or two (it can do no harm from there) to ensure no adverse effect from being moved to the chest. Then scan the file again in the chest to ensure it is still detected as infected and if so delete it from the chest.