Requirement for a 3d plotting library creates random box

[arm61]

EasyReflectometry doesn't have the need for 3d plotting. But easyApp expects 3d plotting and therefore EasyReflectometry has this random box in the preferences pane. (see attached image)

The file that is expecting the 3d plotting library to be defined can be seen here

file:///Users/andrewmccluskey/mambaforge/envs/easyscience/lib/python3.8/site-packages/easyApp/Gui/Components/PreferencesDialog.qml:222: TypeError: Cannot read property 'current3dPlottingLib' of undefined
file:///Users/andrewmccluskey/mambaforge/envs/easyscience/lib/python3.8/site-packages/easyApp/Gui/Elements/ApplicationWindow.qml:21:5: Unable to assign [undefined] to QString
file:///Users/andrewmccluskey/mambaforge/envs/easyscience/lib/python3.8/site-packages/easyApp/Gui/Components/PreferencesDialog.qml:219: TypeError: Cannot read property 'plotting3dLibs' of undefined

[arm61]

This is a lack of generality in easyApp, it is reflecting easyDiffraction functionality that is not necessary outside of diffraction.