Replace i with _ as for loop index

Author: ckaraneen

examples/emulator_examples/global_counter_example_manual_override.py

@@ -32,7 +32,7 @@
 
 def mouse(data):
     time.sleep(1)
-    for i in range(5):
+    for _ in range(5):
         time.sleep(1)
         my_bpod.manual_override(Bpod.ChannelTypes.INPUT, 'Port',
                                 channel_number=1, value=12)