remove unused trait

Author: kariy

crates/katana/core/src/backend/storage.rs

@@ -12,7 +12,7 @@ use katana_primitives::version::ProtocolVersion;
 use katana_provider::providers::db::DbProvider;
 use katana_provider::providers::fork::ForkedProvider;
 use katana_provider::traits::block::{BlockProvider, BlockWriter};
-use katana_provider::traits::contract::{ContractClassWriter, ContractClassWriterExt};
+use katana_provider::traits::contract::ContractClassWriter;
 use katana_provider::traits::env::BlockEnvProvider;
 use katana_provider::traits::stage::StageCheckpointProvider;
 use katana_provider::traits::state::{StateFactoryProvider, StateRootProvider, StateWriter};
@@ -43,7 +43,6 @@ pub trait Database:
     + StateRootProvider
     + StateWriter
     + ContractClassWriter
-    + ContractClassWriterExt
     + StateFactoryProvider
     + BlockEnvProvider
     + ClassTrieWriter
@@ -68,7 +67,6 @@ impl<T> Database for T where
         + StateRootProvider
         + StateWriter
         + ContractClassWriter
-        + ContractClassWriterExt
         + StateFactoryProvider
         + BlockEnvProvider
         + ClassTrieWriter