reverted nonce changes

tests/network-tests/src/iznik/utils/sender.ts

@@ -48,7 +48,6 @@ export class Sender {
               if (event.event.method === 'ExtrinsicFailed') {
                 if (expectFailure) {
                   resolve()
-                  this.clearNonce(account.address)
                 } else {
                   reject(new Error('Extrinsic failed unexpectedly'))
                 }