TransactionExecutor.gasUsedInTheBlock is always zero

[fedejinich]

The current implementation of TransactionExecutor requires setting up an amount of gasUsedInTheBlock, this it's done by the TransactionExecutorFactory.

The problem here is that that this parameter it's always started in zero, and it doesn't seem to be relevant (even at the tests it's always zero). So I propose to

• set up a default value and/or
• get rid of this custom parameter

[fedejinich]

Another proposal might be removing the TransactionExecutorFactory it doesn't add much value, there are just two kinds of TransactionExecutor instances

1. a transaction execution instance
2. a local execution instance (without vmTrace and with no deletedAccounts)