Merge #18997: gui: Remove un-actionable TODO

4444dbf4d5 gui: Remove un-actionable TODO (MarcoFalke)

Pull request description:

  With encryption turned on by default for all wallets in consideration (#18889), I believe that wallet decryption will not be implemented ever or at least any time soon. So remove that TODO comment for now. If deemed important, a brainstorming issue can be opened instead.

  Also remove some TODOs in the RPC console, which I don't understand. Maybe the gui was meant to show the debug log interactively? In any case, if deemed important, this should be filed as a brainstorming feature request, so that trade-offs of different solutions can be discussed.

ACKs for top commit:
  laanwj:
    Thanks. ACK 4444dbf4d5
  achow101:
    ACK 4444dbf4d5

Tree-SHA512: f7ddb37a14178f575da5409ea1c34e34bde37d79b2b56eaaf606a069e2b91c9d7b734529f5c68664b2fa5aa831117c8d19cce823743671cd6c31b81d68b8c70c

src/qt/walletmodel.cpp

@@ -317,16 +317,10 @@ WalletModel::EncryptionStatus WalletModel::getEncryptionStatus() const
 
 bool WalletModel::setWalletEncrypted(bool encrypted, const SecureString &passphrase)
 {
-    if(encrypted)
-    {
-        // Encrypt
+    if (encrypted) {
         return m_wallet->encryptWallet(passphrase);
     }
-    else
-    {
-        // Decrypt -- TODO; not supported yet
-        return false;
-    }
+    return false;
 }
 
 bool WalletModel::setWalletLocked(bool locked, const SecureString &passPhrase)