chore(core-blockchain): remove updateNetworkStatus on Blockchain

[sebastijankuzner]

Summary

Remove unused updateNetworkStatus method on Blockchain.

Checklist

• Tests (if necessary)
• Ready to be merged

[codecov-commenter]

Codecov Report

Merging #4402 (41fa76d) into develop (14d162d) will increase coverage by 1.32%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #4402      +/-   ##
===========================================
+ Coverage    94.54%   95.86%   +1.32%     
===========================================
  Files          738      738              
  Lines        18366    18365       -1     
  Branches      2243     2243              
===========================================
+ Hits         17364    17606     +242     
+ Misses         801      557     -244     
- Partials       201      202       +1     

Flag	Coverage Δ
functional	5.73% <ø> (?)
integration	9.53% <ø> (+<0.01%)	⬆️
unit	94.46% <ø> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
packages/core-blockchain/src/blockchain.ts	100.00% <ø> (ø)
packages/core-p2p/src/network-monitor.ts	98.14% <0.00%> (+0.37%)	⬆️
packages/core-database/src/utils/transform.ts	100.00% <0.00%> (+25.00%)	⬆️
...core-database/src/repositories/round-repository.ts	88.88% <0.00%> (+55.55%)	⬆️
...atabase/src/repositories/transaction-repository.ts	84.09% <0.00%> (+65.90%)	⬆️
...core-database/src/repositories/block-repository.ts	89.18% <0.00%> (+81.08%)	⬆️
...e-database/src/repositories/abstract-repository.ts	94.52% <0.00%> (+89.04%)	⬆️
...rc/migrations/20190307000000-drop-wallets-table.ts	100.00% <0.00%> (+100.00%)	⬆️
...c/migrations/20180305200000-create-rounds-table.ts	100.00% <0.00%> (+100.00%)	⬆️
...c/migrations/20180305300000-create-blocks-table.ts	100.00% <0.00%> (+100.00%)	⬆️
... and 24 more

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[stale]

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