Revert "allow for spendable OR solvable to be criteria for utxo selection"
Revert "allow for spendable OR solvable to be criteria for utxo selection"

This reverts commit ee2cfd41e3406355020ad8932c67a6234d385f68.

syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin