I read the following lines in some post about how to reverse a bitcoin transaction:
"How to stop/reverse a Bitcoin transaction without confirmations: Run bitcoind and with -zapwallettxes. This makes the wallet "forget" any unconfirmed transactions, thus enabling you to reuse their inputs."
My question is: Is this method only applicable to specific wallet? I use blockchain.info wallet and have some unconfirmed outgoing transactions not yet confirmed.