Symbol Removal - Scrape
What you need: A sharp edge such as a box cutter.
This was an experiment I tried late one night, it works, but takes come of the shine off the pony... something to consider.
Hold the box cutter at a slant and pull it toward you. Make sure you are using the flat of the blade, it should scrape off the paint fairly easily.
Completed pony. As you can see in the picture it took took some of the shiney sparkle off this pony when the symbol was scraped off. This might make you bait unsuitable for some projects. However, if your symbol is large enough to cover the spot, or you are painting the body this method is quick and through.