Get rid of these editor warnings

src/post.rs

@@ -31,8 +31,11 @@ pub fn parse_post(path: path::PathBuf) -> Post {
 }
 
 mod tests {
+    #[allow(unused_imports)]
     use super::*;
+    #[allow(unused_imports)]
     use std::{env, fs};
+    #[allow(unused_imports)]
     use uuid::Uuid;
 
     #[test]