Easiest way to debadge is to heat up the badge(s) with hairdryer/glue gun (heaps!) then use a fishing line in a slicing motion up and down (if the badge is horizontal) and it should easily lift right off.
The use a bit of metho to rub the excess glue off.
I've heard a few things about metho, mainly not to leave it on the car so on so afterwards I'd wipe the metho straight away and also wash the area & apply abit of wax.
And yes I've done this myself.

And as others have said, the "Integra" badge is held on with glue, so no holes afterwards.