Revert "Shred password after usage"
Revert "Shred password after usage"

This reverts commit b1ec0f57dad5ac34cbebeedeba05a789a24d41e3.

martindale/bitcore,martindale/bitcore,bitpay/bitcore,martindale/bitcore,martindale/bitcore,bitpay/bitcore,bitpay/bitcore,bitpay/bitcore