Update screenshot_test.py

Author: JE-Chen

test/unit_test/screen/screenshot_test.py

@@ -8,7 +8,6 @@
 print(image)
 
 subprocess.Popen("calc", stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, shell=True)
-subprocess.Popen("edge", stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, shell=True)
 
 # screenshot and save
 image = screenshot("test.png")