- Right click on the connection line and select Delete.
- Left-click to select the connection line then press the delete key.
- Right click on the connection line and select Disconnect (only applicable when you mean to disconnect a node along a straight line).
Note: if you delete a connection line feeding into a merge, that merge will lose its settings, and you may end up needing to reconfigure the merge. This can be avoided by adding a placeholder node such as a Cache node.