Mine has 8 tasks listed at the start of the avast5.ini, but they are undecipherable CLSID style numbers not names and I haven't got 8 scheduled scan tasks, just two, so I don't know if this retains historical info if I set any test scheduled scans.
However, these are expanded further down the [Scanner] section, the first I see shows Weekly in the listing, but I can't see the scheduled time that I can decipher. The second shows a Monthly scan schedule, so it looks like the first two relate to my scheduled scans, the others I'm not too sure about.
So it may be possible to find one with a Daily schedule, but what to do about it is the next question. Whilst editing the avast5.ini is possible I with notepad, don't know if deleting the entry details for the Daily scan and the associated Task at the top would do it. That would then have a list of Tasks at the top that may be out of their numeric order, I don't know if that is important or not.