Remove unused codes from network and genesis

[simonjiao]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Other information

[github-actions]

Benchmark for b180535

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Test	Base	PR	%
accumulator_append	993.2±239.31µs	909.6±213.37µs	-8.42%
block_apply/block_apply_10	479.4±88.18ms	427.3±71.70ms	-10.87%
block_apply/block_apply_1000	51.1±3.51s	50.3±3.35s	-1.57%
get_with_proof/db_store	56.1±13.42µs	56.6±11.53µs	+0.89%
get_with_proof/mem_store	47.5±12.44µs	54.4±12.83µs	+14.53%
put_and_commit/db_store/1	124.0±9.95µs	160.9±39.81µs	+29.76%
put_and_commit/db_store/10	1580.4±350.91µs	1432.9±307.02µs	-9.33%
put_and_commit/db_store/100	13.5±2.22ms	14.6±3.45ms	+8.15%
put_and_commit/db_store/5	723.5±140.55µs	620.1±125.28µs	-14.29%
put_and_commit/db_store/50	5.6±0.62ms	6.7±1.42ms	+19.64%
put_and_commit/mem_store/1	81.2±19.18µs	99.4±21.13µs	+22.41%
put_and_commit/mem_store/10	851.5±171.40µs	847.1±247.67µs	-0.52%
put_and_commit/mem_store/100	9.0±2.00ms	10.4±2.41ms	+15.56%
put_and_commit/mem_store/5	496.8±114.64µs	384.2±85.46µs	-22.67%
put_and_commit/mem_store/50	4.2±0.97ms	3.4±0.25ms	-19.05%
query_block/query_block_in(10)_times(100)	6.4±1.22ms	7.7±1.34ms	+20.31%
query_block/query_block_in(10)_times(1000)	64.2±10.55ms	55.5±5.88ms	-13.55%
query_block/query_block_in(10)_times(10000)	592.0±60.85ms	508.1±87.00ms	-14.17%
query_block/query_block_in(1000)_times(100)	1635.2±309.41µs	1509.9±260.76µs	-7.66%
query_block/query_block_in(1000)_times(1000)	13.4±2.04ms	14.0±2.11ms	+4.48%
query_block/query_block_in(1000)_times(10000)	139.4±37.48ms	153.9±16.20ms	+10.40%
storage_transaction	1116.3±346.21µs	1098.4±433.78µs	-1.60%
vm/transaction_execution/1	531.3±99.90ms	506.9±81.33ms	-4.59%
vm/transaction_execution/10	153.3±13.81ms	157.9±10.37ms	+3.00%
vm/transaction_execution/20	141.9±8.91ms	138.8±12.25ms	-2.18%
vm/transaction_execution/5	196.0±18.99ms	192.7±16.28ms	-1.68%
vm/transaction_execution/50	175.1±20.50ms	168.0±17.20ms	-4.05%