Disconnect nodes input in the Node Graph.

• Select node(s).
• Edit -> Remove input

• Selected nodes get their input disconnected in the Node Graph.

• Ctrl+D

• Copy 'removeInput' folder in your .Natron folder.
• Add following lines to your 'initGui.py' file, where <path> is the location of 'removeInput' folder.

from <path>.removeInput.removeInput import *
NatronGui.natron.addMenuCommand('Edit/Remove input','removeInput', QtCore.Qt.Key.Key_D, QtCore.Qt.KeyboardModifier.ControlModifier)