>>8931
No offence but did you even look?
For the RPGMaker 2k ones it's in games root directory and they're named 'SaveXX.lsd' (Where XX is a number, ex; '01' for first slot).
For the newer RPGMaker VXAce ones it's also in root and they're named 'SaveXX.rvdata2'.
Also why do you even want to delete them? It's not like it has any effect on anything if you don't load them, rename them or just override them.