python/demos/demo_spectrogram.py: remove unused import

diff --git a/python/demos/demo_spectrogram.py b/python/demos/demo_spectrogram.py
index 3619ddc..73e3c93 100755 (executable)
--- a/python/demos/demo_spectrogram.py
+++ b/python/demos/demo_spectrogram.py
@@ -2,7 +2,7 @@
 
 import sys, os.path
 from aubio import pvoc, source
-from numpy import array, arange, zeros, log10, vstack
+from numpy import zeros, log10, vstack
 import matplotlib.pyplot as plt
 
 def get_spectrogram(filename, samplerate = 0):