fix additional import

Author: zm711

neo/rawio/neuralynxrawio/neuralynxrawio.py

@@ -53,7 +53,6 @@
     _spike_channel_dtype,
     _event_channel_dtype,
 )
-from operator import itemgetter
 import numpy as np
 import os
 import pathlib

neo/rawio/neuralynxrawio/nlxheader.py

@@ -1,4 +1,3 @@
-import dateutil
 from packaging.version import Version
 import os
 import re
@@ -317,7 +316,7 @@ def _setTimeDate(self, txt_header):
         """
         Read time and date from text of header
         """
-
+        import dateutil
         # opening time
         sr = NlxHeader._openDatetime1_pat.search(txt_header)
         if not sr: sr=NlxHeader._openDatetime2_pat.search(txt_header)