Stop using numpy.int, deprecated in 1.20 and later removed

It was just an alias for the built-in int, so use that instead.

Author: musicinmybrain

klusta/traces/tests/test_spikedetekt.py

@@ -46,7 +46,7 @@ def test_relative_channels():
 
 
 def test_split_spikes():
-    groups = np.zeros(10, dtype=np.int)
+    groups = np.zeros(10, dtype=int)
     groups[1::2] = 1
 
     idx = np.ones(10, dtype=np.bool)

klusta/utils.py

@@ -75,7 +75,7 @@ def _index_of(arr, lookup):
     # values
     lookup = np.asarray(lookup, dtype=np.int32)
     m = (lookup.max() if len(lookup) else 0) + 1
-    tmp = np.zeros(m + 1, dtype=np.int)
+    tmp = np.zeros(m + 1, dtype=int)
     # Ensure that -1 values are kept.
     tmp[-1] = -1
     if len(lookup):