The testnet data directory is not ~/.bitcoin but rather ~/.bitcoin/testnet3. ~/.bitcoin holds the data for the main Bitcoin blockchain.
the files are still there but deleting them wont work anymore.
so how do i delete all block history and transaction history now from testnet /regtest/signet ?
if i delete the files you mentioned nothing is happening . still get 3 years and 8 months loading ....
all help is welcome thanks in advance