Removed some unused imports.

tests/draw.py

@@ -1,10 +1,8 @@
 #!/usr/bin/env python
 from __future__ import division
 import pygame
-import sys
-import time
 from threading import Thread
-from math import degrees, cos, sin
+from math import degrees
 
 from src.server import GestureServer
 from src.window import FullscreenWindow