Remove PYLON_CAMEMU test comment

Delete commented-out code that forced pypylon to create emulation virtual cameras (PYLON_CAMEMU), which was only intended for testing and should not be enabled for release. Also remove an extraneous blank line to tidy up the file.

Author: C-Achard

dlclivegui/gui/main_window.py

@@ -9,10 +9,6 @@
 import time
 from pathlib import Path
 
-# NOTE @C-Achard: his could be added in settings eventually
-# Forces pypylon to create 2 emulation virtual cameras,
-# mostly for testing. This shold not be enabled for release.
-# os.environ["PYLON_CAMEMU"] = "2"
 import cv2
 import numpy as np
 from PySide6.QtCore import QRect, QSettings, Qt, QTimer, QUrl