Removed dep

src/main.rs

@@ -1,6 +1,6 @@
 use std::error::Error;
 
-use calamine::{open_workbook, Reader, Xlsx, RangeDeserializerBuilder};
+use calamine::{open_workbook, Reader, Xlsx};
 use rusqlite::{Connection, Result};
 
 const SCHEMA: &str = r#"CREATE TABLE IF NOT EXISTS data (