remove level index

Author: Hitenjain14

code/go/0chain.net/blobbercore/allocation/allocationchange.go

@@ -100,7 +100,7 @@ func (change *AllocationChange) Save(ctx context.Context) error {
 
 func (change *AllocationChange) Update(ctx context.Context) error {
 	db := datastore.GetStore().GetTransaction(ctx)
-	return db.Table(change.TableName()).Where("lookup_hash = ?", change.LookupHash).Updates(map[string]interface{}{
+	return db.Table(change.TableName()).Where("connection_id = ? AND lookup_hash = ?", change.ConnectionID, change.LookupHash).Updates(map[string]interface{}{
 		"size":       change.Size,
 		"updated_at": time.Now(),
 		"input":      change.Input,

goose/migrations/1718391849_ref_index.sql

@@ -1,5 +1,4 @@
 -- +goose Up
 -- +goose StatementBegin
-DROP INDEX idx_created_at,idx_updated_at,idx_lookup_hash,path_idx,idx_path_gin_trgm,idx_name_gin,idx_path_alloc;
-CREATE INDEX idx_allocation_path ON reference_objects USING btree(allocation_id,path,level);
+DROP INDEX idx_created_at,idx_updated_at,idx_lookup_hash,path_idx,idx_path_gin_trgm,idx_name_gin,idx_allocation_changes_lookup_hash;
 -- +goose StatementEnd