feat(db): Soft-remove storage table (matter-labs#982)

## What ❔

Soft-removes the `storage` table, so that it's not referenced in any DB
queries. The table itself will be dropped separately after this code
change is deployed on all envs.

## Why ❔

Faster miniblock sealing; less data in Postgres. Also simplifies
snapshot recovery.

## Checklist

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [x] Tests for the changes have been added / updated.
- [x] Documentation comments have been added / updated.
- [x] Code has been formatted via `zk fmt` and `zk lint`.
- [x] Spellcheck has been run via `zk spellcheck`.
- [x] Linkcheck has been run via `zk linkcheck`.

core/bin/snapshots_creator/src/tests.rs

@@ -197,7 +197,7 @@ async fn prepare_postgres(
         create_miniblock(conn, MiniblockNumber(block_number), logs.clone()).await;
 
         let factory_deps = gen_factory_deps(rng, 10);
-        conn.storage_dal()
+        conn.factory_deps_dal()
             .insert_factory_deps(MiniblockNumber(block_number), &factory_deps)
             .await
             .unwrap();