Make stickler happy

library/tests/test_features.py

@@ -1,4 +1,3 @@
-import sys
 import mock
 from tools import force_reimport
 

library/tests/test_setup.py

@@ -44,4 +44,4 @@ def test_setup_with_reset(GPIO, spidev, numpy):
     import ST7735
     display = ST7735.ST7735(port=0, cs=0, dc=24, rst=4)
     GPIO.setup.assert_called_with(4, GPIO.OUT)
-    del display
+    del display

library/tests/tools.py

@@ -14,7 +14,7 @@ def force_reimport(module):
         steps = module.split(".")
     else:
         steps = [module]
-    
+
     for i in range(len(steps)):
         module = ".".join(steps[0:i + 1])
         try: