Remove old code

util/reader.py

@@ -10,16 +10,3 @@ def parse_datafile(data_file: Path, output_format: str) -> str | list:
             case 'int_list':
                 return [int(line) for line in data_file.read().strip().splitlines()]
     return []
-
-
-def data_as_string(data_file: Path) -> str:
-    with open(data_file) as file:
-        return file.read().strip()
-
-
-def data_as_list(data_file: Path) -> list:
-    return [line for line in data_as_string(data_file).strip()]
-
-
-def data_as_int_list(data_file: Path) -> list:
-    return [int(line) for line in data_as_string(data_file).strip()]