Removed unused imports

[onuratakan]

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[viezly]

This pull request is split into 6 parts for easier review.
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Changed files are located in these folders:

• naruno
• naruno/blockchain/block
• naruno/lib

[codecov]

Codecov Report

Merging #1607 (0436f83) into master (ad58c8b) will decrease coverage by 0.05%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master    #1607      +/-   ##
==========================================
- Coverage   97.75%   97.70%   -0.05%     
==========================================
  Files         133      133              
  Lines       10761    10553     -208     
==========================================
- Hits        10519    10311     -208     
  Misses        242      242              

Flag	Coverage Δ
unittests	97.70% <83.33%> (-0.05%)	⬇️

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Impacted Files	Coverage Δ
naruno/accounts/commanders/delete_commander.py	100.00% <ø> (ø)
naruno/accounts/commanders/get_comnder.py	100.00% <ø> (ø)
naruno/accounts/commanders/save_commander.py	100.00% <ø> (ø)
naruno/accounts/get_balance.py	80.00% <ø> (-0.65%)	⬇️
naruno/apps/checker.py	100.00% <ø> (ø)
naruno/apps/remote_app.py	76.98% <ø> (-0.06%)	⬇️
naruno/blockchain/block/block_main.py	96.96% <ø> (-0.23%)	⬇️
...no/blockchain/block/get_minumum_transfer_amount.py	92.30% <ø> (-1.45%)	⬇️
naruno/blockchain/block/just_one_tx.py	71.42% <ø> (-1.91%)	⬇️
naruno/blockchain/block/max_data_size.py	90.90% <ø> (-0.76%)	⬇️
... and 33 more

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