No sleeps after moves, print computation time

bot.py

@@ -25,7 +25,10 @@ if __name__ == '__main__':
         state.print()
         print()
 
+        start = time.time()
         moves = state.solve()
+        end = time.time()
+        print('thought for %.4f seconds' % (end - start))
 
         if moves:
             print('moves:', moves_to_keys(moves))
@@ -45,6 +48,3 @@ if __name__ == '__main__':
             press_keys(win, moves_to_keys(moves))
         else:
             print('no moves')
-            press_keys(win, 'l')
-
-        time.sleep(.1)