delete transactions executed from mempool/regpool

[Slixe]

Description

Transactions already executed or stale ones stays in the mempool during long time. In this merge request, I manually delete all transactions executed in a new block from the mempool and regpool.

Type of change

Please select the right one.

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update
• [ ] This will require a HardFork to be enabled

Which part is impacted ?

• [ ] Wallet
• [X] Daemon
• [ ] Miner
• [ ] Explorer
• [ ] Simulator
• [ ] Misc (documentation, comments, text...)

Checklist:

• [X] I have performed a self-review of my code
• [X] I have commented my code, particularly in hard-to-understand areas
• [X] My changes generate no new warnings

License

Im am contributing & releasing the code under DERO Research License (which can be found here).

[Slixe]

This should fix such following problem