How to remove Raspberry PI nodes in 0.19.6?

Those nodes are part of the core install of Node-RED - they are not separate modules you can remove with npm.

You have three options:

  1. leave them there
  2. open the Manage Palette dialog, find them under the 'node-red' module and disable them.
  3. edit your settings.js file and add a nodeExcludes entry that lists node files the runtime should ignore. You can see that in action with the default settings file we use in IBM Cloud - https://github.com/ibmets/node-red-bluemix-starter/blob/master/bluemix-settings.js#L47