In some regions of England, it is fairly common to omit the auxiliary 'have' in present and past perfect aspects. However, many say that this is plain wrong and I know of no exam that would accept it as a valid form. It's a feature of dialects, but few regard it as correct English. My advice would be not to use it.
The example you give is AE and wouldn't be used here in the UK. You will hear sentences like 'I done the work', but it's best not to copy.