remove unused function

src/lib.rs

@@ -68,13 +68,6 @@ pub fn read_config(file: &String) -> Config {
     serde_json::from_str(&read[..]).expect("couldn't parse json")
 }
 
-pub fn ensure_exists(path: String) {
-    let p = Path::new(&path);
-    if !p.exists() {
-        fs::create_dir_all(p).expect("couldn't create folder")
-    }
-}
-
 #[derive(Serialize, Deserialize)]
 pub struct Config {
     pub latest_date: String,