chore: revert hybrid storage experiment

[dhyaniarun1993]

Revert all the changes made as part of the hybrid storage experiment.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 38.13%. Comparing base (01da650) to head (60b754e).
⚠️ Report is 1 commits behind head on unstable.

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/optimism/exex/src/lib.rs	60.62% <ø> (-2.98%)	⬇️
crates/optimism/trie/src/api.rs	100.00% <ø> (ø)
crates/optimism/trie/src/backfill.rs	89.54% <ø> (-0.40%)	⬇️
crates/optimism/trie/src/db/store.rs	98.16% <ø> (-0.05%)	⬇️
crates/optimism/trie/src/in_memory.rs	78.14% <ø> (-0.45%)	⬇️
crates/optimism/trie/src/metrics.rs	83.58% <ø> (-1.04%)	⬇️
crates/optimism/trie/src/provider.rs	49.60% <ø> (ø)

... and 9 files with indirect coverage changes

Flag	Coverage Δ
e2e	35.60% <ø> (-0.19%)	⬇️
unit	26.59% <ø> (-0.31%)	⬇️

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Components	Coverage Δ
reth binary	53.14% <ø> (ø)
op historical proof	89.67% <ø> (-0.30%)	⬇️

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[Copilot]

Pull request overview

This PR reverts all changes related to a hybrid storage experiment, specifically removing the address mapping functionality that was previously added. The revert is comprehensive and affects multiple layers of the storage system.

• Removes the store_address_mappings API method from the OpProofsStore trait
• Eliminates address mapping storage from both in-memory and database implementations
• Cleans up associated tests, metrics, and backfill logic

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/optimism/trie/src/provider.rs	Updates Debug output test to reflect removal of address_mappings field
crates/optimism/trie/src/metrics.rs	Removes StoreAddressMapping metric variant and implementation
crates/optimism/trie/src/in_memory.rs	Removes address_mappings field and store_address_mappings method from in-memory storage
crates/optimism/trie/src/db/store.rs	Removes store_address_mappings method and related tests from MDBX storage
crates/optimism/trie/src/db/models/mod.rs	Removes AddressLookup table definition and unused Address import
crates/optimism/trie/src/backfill.rs	Removes address mapping backfill logic and tests
crates/optimism/trie/src/api.rs	Removes store_address_mappings method from OpProofsStore trait
crates/optimism/exex/src/lib.rs	Removes calls to store_address_mappings and related imports

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