remove numeric check and just do sprites in the order that they were imported

src/lib.rs

@@ -143,19 +143,6 @@ fn segments_from_string(string: String) -> Vec<String> {
     output
 }
 
-/// for some reason the sprites with numeric IDs go first,
-/// then SPR A (avatar), then all the non-numeric IDs
-#[inline]
-fn is_string_numeric(str: String) -> bool {
-    for c in str.chars() {
-        if !c.is_numeric() {
-            return false;
-        }
-    }
-
-    return true;
-}
-
 /// e.g. pass all tile IDs into this to get a new non-conflicting tile ID
 #[inline]
 fn new_unique_id(ids: Vec<String>) -> String {