well your question is a little bit off-topic since coins on bitcoin can't be deleted
Technically speaking, yes, they can.
All it takes is knowing exactly which addresses belong to Satoshi and then tamper with the blockchain.
Of course the majority would have to agree on the new chain.And because the majority would never agree with the new chain, you may as well acknowledge that they cannot
Another way that they could be deleted would be for someone to alter Satoshi's brain and/or his records such that he cannot find his private keys. That would also effectively delete them, but again, why are we considering these outlandish scenarios? Lol.