refactor(event cache): simplify Deduplicator so it only operates with the store impl

Author: bnjbvr

Cargo.lock

@@ -78,7 +78,6 @@ eyeball-im = { workspace = true }
 eyre = { version = "0.6.12", optional = true }
 futures-core = { workspace = true }
 futures-util = { workspace = true }
-growable-bloom-filter = { workspace = true }
 http = { workspace = true }
 imbl = { workspace = true, features = ["serde"] }
 indexmap = { workspace = true }