Remove CPP Preferences page from WPILib preferences (code has already been deleted)
Remove CPP Preferences page from WPILib preferences (code has already been deleted)

Change-Id: I58a4df41fdd846187ecfc6e57f0c4239bd435d42

wpilibsuite/EclipsePlugins,calcmogul/EclipsePlugins,wpilibsuite/EclipsePlugins,calcmogul/EclipsePlugins,calcmogul/EclipsePlugins,calcmogul/EclipsePlugins,wpilibsuite/EclipsePlugins,wpilibsuite/EclipsePlugins