chore: simplify revm specId mapping

[mattsse]

now that we require TTD to know the activation block number, we no longer need to operate on Head and can instead operate on Header, although even just timestap + blocknumber is enough

simplified the optimism impl and removed all of the non optimism hardforks.

for OP timestamp is sufficient because the only block based hardfork is bedrock, and it is required that every OP chain supports bedrock

[codspeed-hq]

CodSpeed Performance Report

Merging #13553 will degrade performances by 21.12%

_{Comparing matt/simplify-revm-specid-mapping (ff1bb07) with main (3fbb230)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 75 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	matt/simplify-revm-specid-mapping	Change
⚡	`hash builder[init size 10000	update size 100	num updates 1]`	10 ms
❌	`sparse trie[init size 10000	update size 100	num updates 3]`	10.1 ms

[fgimenez]

lgtm