docs: remove retired legacy RPCs - #65

Running Vale across on the following files affected by this PR:

- evm/reference.mdx
- evm/tracing/index.mdx
- evm/transactions-with-seid.mdx
- evm/transactions.mdx
- learn/accounts.mdx
- node/node-operators.mdx

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evm/reference.mdx:
	- 266:1059    'simply' is often unnecessary qualifying language — consider removing it.
	- 1435:5      Use sentence case for headings: 'Cross-VM transaction lookup'.
	- 1485:5      Use sentence case for headings: 'Deprecation HTTP header'.

evm/tracing/index.mdx:
	- 21:4     Use sentence case for headings: 'What You Can Trace'.
	- 23:5     Use sentence case for headings: 'Transaction Execution'.
	- 37:5     Use sentence case for headings: 'Performance Analysis'.
	- 44:5     Use sentence case for headings: 'Security Analysis'.
	- 51:4     Use sentence case for headings: 'Available Tracing Methods'.
	- 61:4     Use sentence case for headings: 'Transaction Analysis Example'.
	- 271:4    Use sentence case for headings: 'Debugging Failed Transactions'.
	- 291:5    Use sentence case for headings: 'Step 2: Trace the Execution'.
	- 335:5    Use sentence case for headings: 'Step 3: Fix and Test'.
	- 366:4    Use sentence case for headings: 'Common Debugging Scenarios'.
	- 368:5    Use sentence case for headings: 'Transaction Reverted'.
	- 373:5    Use sentence case for headings: 'Out of Gas'.
	- 378:5    Use sentence case for headings: 'Unexpected Behavior'.
	- 383:5    Use sentence case for headings: 'Slow Performance'.
	- 388:4    Use sentence case for headings: 'Quick Reference'.
	- 390:5    Use sentence case for headings: 'Essential Commands'.
	- 406:5    Use sentence case for headings: 'Common Tracers'.
	- 412:4    Use sentence case for headings: 'Pre-Baked Trace Cache'.
	- 450:4    Use sentence case for headings: 'Next Steps'.

evm/transactions-with-seid.mdx:
	- 16:4     Use sentence case for headings: 'Network Configuration'.
	- 28:4     Use sentence case for headings: 'Common Transaction Flags'.
	- 61:4     Use sentence case for headings: 'Token Transfer Commands'.
	- 63:5     Use sentence case for headings: 'Send Native Tokens'.
	- 93:5     Use sentence case for headings: 'Send ERC20 Tokens'.
	- 124:4    Use sentence case for headings: 'Contract Deployment Commands'.
	- 126:5    Use sentence case for headings: 'Deploy Contract'.
	- 157:4    Use sentence case for headings: 'Contract Interaction Commands'.
	- 159:5    Use sentence case for headings: 'Call Contract'.
	- 190:5    Use sentence case for headings: 'Call Precompile'.
	- 233:4    Use sentence case for headings: 'Advanced Usage'.
	- 235:5    Use sentence case for headings: 'Custom Gas Settings'.
	- 246:5    Use sentence case for headings: 'Nonce Management'.
	- 256:4    Use sentence case for headings: 'Error Handling'.
	- 268:4    Use sentence case for headings: 'Best Practices'.
	- 276:4    Use sentence case for headings: 'Transaction Requirements'.

evm/transactions.mdx:
	- 10:4     Use sentence case for headings: 'Transaction Lifecycle'.
	- 27:4     Use sentence case for headings: 'Gas Mechanics'.
	- 47:4     Use sentence case for headings: 'Transaction Structure'.
	- 269:4    Use sentence case for headings: 'Transaction Guidelines'.
	- 288:4    Use sentence case for headings: 'Transaction Validation'.
	- 305:4    Use sentence case for headings: 'Additional Resources'.

learn/accounts.mdx:
	- 35:4     Use sentence case for headings: 'Key Points'.
	- 37:5     Use sentence case for headings: 'Before Linking'.
	- 47:5     Use sentence case for headings: 'After Linking'.
	- 52:4     Use sentence case for headings: 'Wallet Association and Transfer Limitations'.
	- 61:4     Use sentence case for headings: 'Methods of Association'.
	- 77:4     Use sentence case for headings: 'Method 1: Broadcast a Transaction'.
	- 86:4     Use sentence case for headings: 'Method 2: Direct Private Key Association'.
	- 119:4    Use sentence case for headings: 'Method 3: Associate via Signed Message'.
	- 158:4    Use sentence case for headings: 'Method 4: Associate via Public Key'.
	- 195:4    Use sentence case for headings: 'Query Linked Addresses'.
	- 199:5    Use sentence case for headings: 'Fetch Bech32 Address for an EVM Address'.
	- 241:5    Use sentence case for headings: 'Fetch EVM Address for a Sei Address'.
	- 254:4    Use sentence case for headings: 'Deriving Addresses from the Public Key'.
	- 262:5    Use sentence case for headings: 'Sei Address Derivation'.
	- 287:5    Use sentence case for headings: 'EVM Address Derivation'.
	- 316:5    Use sentence case for headings: 'Why It Works'.
	- 331:4    Use sentence case for headings: 'HD Paths and Coin Types'.
	- 338:5    Use sentence case for headings: 'Coin Type Parameter'.
	- 358:5    Use sentence case for headings: 'Private Key Export'.
	- 366:5    Use sentence case for headings: 'Example HD Paths'.
	- 371:4    Use sentence case for headings: 'Generating Wallets'.

node/node-operators.mdx:
	- 12:4      Use sentence case for headings: 'Configuration Management'.
	- 14:5      Use sentence case for headings: 'Directory Structure'.
	- 43:5      Use sentence case for headings: 'Essential Configuration Parameters'.
	- 45:6      Use sentence case for headings: 'Network Settings (config.toml)'.
	- 71:6      Use sentence case for headings: 'Application Settings (app.toml)'.
	- 123:5     Use sentence case for headings: 'Default Configurations'.
	- 1397:4    Use sentence case for headings: 'Database Management'.
	- 1421:5    Use sentence case for headings: 'SeiDB Configuration'.
	- 1502:6    Use sentence case for headings: 'PebbleDB version encoding'.
	- 1555:5    Use sentence case for headings: 'Giga Storage and Giga Executor'.
	- 1600:5    Use sentence case for headings: 'Database Maintenance'.
	- 1627:4    Use sentence case for headings: 'Service Management'.
	- 1629:5    Use sentence case for headings: 'Systemd Commands'.
	- 1648:5    Use sentence case for headings: 'Log Management'.
	- 1669:4    Use sentence case for headings: 'Update Procedures'.
	- 1679:5    Use sentence case for headings: 'Minor Updates'.
	- 1721:5    Use sentence case for headings: 'Major Updates'.
	- 1765:4    Use sentence case for headings: 'Performance Optimization'.
	- 1773:5    Use sentence case for headings: 'Memory Management (sysctl tuning)'.
	- 1787:5    Use sentence case for headings: 'Network Stack Optimization'.
	- 1801:5    Use sentence case for headings: 'Storage Optimization'.
	- 1811:4    Use sentence case for headings: 'Backup and Recovery'.
	- 1813:5    Use sentence case for headings: 'Regular Backups'.
	- 1832:5    Use sentence case for headings: 'Recovery Procedure'.
	- 1850:4    Use sentence case for headings: 'Security Considerations'.


Found 90 suggested changes across 6 files in 907.71ms