pyqtSignature calls are not converted

[pilotjoe]

I am attempting to convert someone else's code from Python 2 to 3, which requires an upgrade from PyQt4 to PyQt5. I tried using this tool to do the pyqt conversion and found that old style calls to pyqtSignature such as:
@pyqtSignature("")
def on_btn_Right_released(self):
self.tcp.sendData(cmd.CMD_CAMERA_STOP)
do not get converted to the new style Signals and Slots. I am new to PyQt, so doing this manually is beyond my current skill level. As far as I can tell, support for pyqtSignature has been dropped from the latest PyQt5 because even if I change @pyqtSignature to @QtCore.pyqtSignature I get the error:
AttributeError: module 'PyQt5.QtCore' has no attribute 'pyqtSignature'
I attached the original code I'm trying to convert. Any assistance would be appreciated! Thanks.

main.txt