Test importlib import on travis

nd2reader/__init__.py

@@ -2,10 +2,10 @@ from os import path
 from nd2reader.reader import ND2Reader
 from nd2reader.legacy import Nd2
 
-try:
-    import importlib.metadata as importlib_metadata
-except:
-    import importlib_metadata
+#try:
+import importlib.metadata as importlib_metadata
+#except:
+#    import importlib_metadata
 
 try:
     __version__ = importlib_metadata.version(__name__)