Remove unused types

pyaerocom/io/pyaro/read_pyaro.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import logging
-from typing import NewType, TypeVar
+from typing import TypeVar
 import functools
 from collections import defaultdict
 
@@ -19,10 +19,6 @@
 logger = logging.getLogger(__name__)
 
 
-MetadataEntry = NewType("MetadataEntry", dict[str, str | list[str]])
-Metadata = NewType("Metadata", dict[str, MetadataEntry])
-
-
 class ReadPyaro(ReadUngriddedBase):
     __version__ = "1.0.1"