chore: remove unused variables

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/hyperlog-server/src/services/create_item.rs

@@ -1,4 +1,4 @@
-use hyperlog_core::log::{GraphItem, ItemState};
+use hyperlog_core::log::ItemState;
 use sqlx::types::Json;
 
 use crate::state::SharedState;

crates/hyperlog-server/src/services/create_section.rs

@@ -1,5 +1,3 @@
-use hyperlog_core::log::GraphItem;
-
 use crate::state::SharedState;
 
 #[derive(Clone)]

crates/hyperlog-server/src/services/get_available_roots.rs

@@ -1,6 +1,3 @@
-use hyperlog_core::log::{GraphItem, ItemState};
-use sqlx::types::Json;
-
 use crate::state::SharedState;
 
 #[derive(Clone)]