remove unnecessary semicolons

Author: chrissimpkins

src/ci/cpu-usage-over-time.py

@@ -148,11 +148,11 @@ def idle_since(self, prev):
     print('unknown platform', sys.platform)
     sys.exit(1)
 
-cur_state = State();
+cur_state = State()
 print("Time,Idle")
 while True:
-    time.sleep(1);
-    next_state = State();
+    time.sleep(1)
+    next_state = State()
     now = datetime.datetime.utcnow().isoformat()
     idle = next_state.idle_since(cur_state)
     print("%s,%s" % (now, idle))