Fix unused warnings

Author: trueleo

core/src/sql/arrow_sql_gen/statement.rs

@@ -183,8 +183,8 @@ pub struct InsertBuilder {
 }
 
 pub fn use_json_insert_for_type<T: QueryBuilder + 'static>(
-    data_type: &DataType,
-    query_builder: &T,
+    #[allow(unused_variables)] data_type: &DataType,
+    #[allow(unused_variables)] query_builder: &T,
 ) -> bool {
     #[cfg(feature = "sqlite")]
     {

core/src/sql/sql_provider_datafusion/mod.rs

@@ -156,6 +156,7 @@ impl<T, P> SqlTable<T, P> {
         )?))
     }
 
+    #[cfg(feature = "federation")]
     // Return the current memory location of the object as a unique identifier
     fn unique_id(&self) -> usize {
         std::ptr::from_ref(self) as usize
@@ -186,6 +187,7 @@ impl<T, P> SqlTable<T, P> {
         }
     }
 
+    #[cfg(feature = "federation")]
     fn arc_dialect(&self) -> Arc<dyn Dialect + Send + Sync> {
         match &self.dialect {
             Some(dialect) => Arc::clone(dialect),