Really? I did as you said on Arch Linux, to the extreme-- I uninstalled netbeans 7.4, deleted the sunspotfrcsdk directory, deleted the .netbeans directory, reinstalled netbeans and the plugins, and there was no difference.
I also rebooted into windows, running Netbeans 7.3.1, and updated the plugins. I actually saw the class go away.
I attached a picture of the list I have.
Note: despite it saying FRC 2013, I do have the 2014 plugins downloaded from here:
http://first.wpi.edu/FRC/java/WPILibJ2014.0.zip
Thanks for your help, I really appreciate it.