chore(sequencer_node): drop redundant chain_id field from config

[Itay-Tsabary-Starkware]

Stack:

• chore(tests-integration): run node in integration test #1671
• chore(tests-integration): add node runner to integration test #1670
• chore(tests-integration): add storage, state reader, and config to integration test #1669
• chore(tests-integration): add integration test binary #1668
• chore(sequencer_node): add node compilation #1667
• chore(tests-integration): use required parameters for config #1666
• chore(sequencer_node): add fee token addresses as required parameters #1665
• chore(sequencer_node): drop redundant chain_id field from config #1664 ⬅

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[reviewable-StarkWare]

This change is